Scala Standard Library2.13.8 < Back


# Packages

-  package root

  This is the documentation for the Scala standard library.

  This is the documentation for the Scala standard library.

  #### Package structure

  The scala package contains core types like `Int`, `Float`, `Array` or `Option` which are accessible in all Scala compilation units without explicit qualification or imports.

  Notable packages include:

  - `scala.collection` and its sub-packages contain Scala's collections framework
    - `scala.collection.immutable` - Immutable, sequential data-structures such as `Vector`, `List`, `Range`, `HashMap` or `HashSet`
    - `scala.collection.mutable` - Mutable, sequential data-structures such as `ArrayBuffer`, `StringBuilder`, `HashMap` or `HashSet`
    - `scala.collection.concurrent` - Mutable, concurrent data-structures such as `TrieMap`
  - `scala.concurrent` - Primitives for concurrent programming such as `Futures` and `Promises`
  - `scala.io` - Input and output operations
  - `scala.math` - Basic math functions and additional numeric types like `BigInt` and `BigDecimal`
  - `scala.sys` - Interaction with other processes and the operating system
  - `scala.util.matching` - Regular expressions

  Other packages exist. See the complete list on the right.

  Additional parts of the standard library are shipped as separate libraries. These include:

  - `scala.reflect` - Scala's reflection API (scala-reflect.jar)
  - `scala.xml` - XML parsing, manipulation, and serialization (scala-xml.jar)
  - `scala.collection.parallel` - Parallel collections (scala-parallel-collections.jar)
  - `scala.util.parsing` - Parser combinators (scala-parser-combinators.jar)
  - `scala.swing` - A convenient wrapper around Java's GUI framework called Swing (scala-swing.jar)

  #### Automatic imports

  Identifiers in the scala package and the `scala.Predef` object are always in scope by default.

  Some of these identifiers are type aliases provided as shortcuts to commonly used classes. For example, `List` is an alias for `scala.collection.immutable.List`.

  Other aliases refer to classes provided by the underlying platform. For example, on the JVM, `String` is an alias for `java.lang.String`.

  Definition Classes
    root
-  package scala

  Core Scala types.

  Core Scala types. They are always available without an explicit import.

  Definition Classes
    root
-  package annotation
  Definition Classes
    scala
-  package beans
  Definition Classes
    scala
-  package collection
  Definition Classes
    scala
-  package compat
  Definition Classes
    scala
-  package concurrent

  This package object contains primitives for concurrent and parallel programming.

  This package object contains primitives for concurrent and parallel programming.

  #### Guide

  A more detailed guide to Futures and Promises, including discussion and examples can be found at https://docs.scala-lang.org/overviews/core/futures.html.

  #### Common Imports

  When working with Futures, you will often find that importing the whole concurrent package is convenient:

      import scala.concurrent._

  When using things like `Future`s, it is often required to have an implicit `ExecutionContext` in scope. The general advice for these implicits are as follows.

  If the code in question is a class or method definition, and no `ExecutionContext` is available, request one from the caller by adding an implicit parameter list:

      def myMethod(myParam: MyType)(implicit ec: ExecutionContext) = …
      //Or
      class MyClass(myParam: MyType)(implicit ec: ExecutionContext) { … }

  This allows the caller of the method, or creator of the instance of the class, to decide which `ExecutionContext` should be used.

  For typical REPL usage and experimentation, importing the global `ExecutionContext` is often desired.

      import scala.concurrent.ExcutionContext.Implicits.global

  #### Specifying Durations

  Operations often require a duration to be specified. A duration DSL is available to make defining these easier:

      import scala.concurrent.duration._
      val d: Duration = 10.seconds

  #### Using Futures For Non-blocking Computation

  Basic use of futures is easy with the factory method on Future, which executes a provided function asynchronously, handing you back a future result of that function without blocking the current thread. In order to create the Future you will need either an implicit or explicit ExecutionContext to be provided:

      import scala.concurrent._
      import ExecutionContext.Implicits.global  // implicit execution context

      val firstZebra: Future[Int] = Future {
        val words = Files.readAllLines("/etc/dictionaries-common/words").asScala
        words.indexOfSlice("zebra")
      }

  #### Avoid Blocking

  Although blocking is possible in order to await results (with a mandatory timeout duration):

      import scala.concurrent.duration._
      Await.result(firstZebra, 10.seconds)

  and although this is sometimes necessary to do, in particular for testing purposes, blocking in general is discouraged when working with Futures and concurrency in order to avoid potential deadlocks and improve performance. Instead, use callbacks or combinators to remain in the future domain:

      val animalRange: Future[Int] = for {
        aardvark <- firstAardvark
        zebra <- firstZebra
      } yield zebra - aardvark

      animalRange.onSuccess {
        case x if x > 500000 => println("It's a long way from Aardvark to Zebra")
      }

  Definition Classes
    scala
-  package io
  Definition Classes
    scala
-  package jdk

  The jdk package contains utilities to interact with JDK classes.

  The jdk package contains utilities to interact with JDK classes.

  This packages offers a number of converters, that are able to wrap or copy types from the scala library to equivalent types in the JDK class library and vice versa:

  - CollectionConverters, converting collections like scala.collection.Seq, scala.collection.Map, scala.collection.Set, scala.collection.mutable.Buffer, scala.collection.Iterator and scala.collection.Iterable to their JDK counterparts
  - OptionConverters, converting between Option and java.util.Optional and primitive variations
  - StreamConverters, to create JDK Streams from scala collections
  - DurationConverters, for conversions between scala scala.concurrent.duration.FiniteDuration and java.time.Duration
  - FunctionConverters, from scala Functions to java java.util.function.Function, java.util.function.UnaryOperator, java.util.function.Consumer and java.util.function.Predicate, as well as primitive variations and Bi-variations.

  By convention, converters that wrap an object to provide a different interface to the same underlying data structure use .asScala and .asJava extension methods, whereas converters that copy the underlying data structure use .toScala and .toJava.

  In the javaapi package, the same converters can be found with a java-friendly interface that don't rely on implicit enrichments.

  Additionally, this package offers Accumulators, capable of efficiently traversing JDK Streams.

  Definition Classes
    scala
-  package math

  The package object `scala.math` contains methods for performing basic numeric operations such as elementary exponential, logarithmic, root and trigonometric functions.

  The package object `scala.math` contains methods for performing basic numeric operations such as elementary exponential, logarithmic, root and trigonometric functions.

  All methods forward to java.lang.Math unless otherwise noted.

  Definition Classes
    scala
  See also

    java.lang.Math

-  package ref
  Definition Classes
    scala
-  package reflect
  Definition Classes
    scala
-  package sys

  The package object `scala.sys` contains methods for reading and altering core aspects of the virtual machine as well as the world outside of it.

  The package object `scala.sys` contains methods for reading and altering core aspects of the virtual machine as well as the world outside of it.

  Definition Classes
    scala
-  package util
  Definition Classes
    scala
- #::
- <:<
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- Any
- AnyVal
- App
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- Boolean
- Byte
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c

scala

# Some

###

#### final case class Some[+A](value: A) extends Option[A] with Product with Serializable

Class `Some[A]` represents existing values of type `A`.

Annotations
  @SerialVersionUID()
Source
  Option.scala

Linear Supertypes
Option[A], java.io.Serializable, Product, Equals, collection.IterableOnce[A], AnyRef, Any
Type Hierarchy

Ordering

1. Alphabetic
2. By Inheritance

Inherited

1. Some
2. Option
3. Serializable
4. Product
5. Equals
6. IterableOnce
7. AnyRef
8. Any

Implicitly

1. by option2Iterable
2. by iterableOnceExtensionMethods
3. by any2stringadd
4. by StringFormat
5. by Ensuring
6. by ArrowAssoc

1. Hide All
2. Show All

Visibility

1. Public
2. Protected

### Instance Constructors

1.  new Some(value: A)

### Type Members

1.  class WithFilter extends AnyRef

   We need a whole WithFilter class to honor the "doesn't create a new collection" contract even though it seems unlikely to matter much in a collection with max size 1.

   We need a whole WithFilter class to honor the "doesn't create a new collection" contract even though it seems unlikely to matter much in a collection with max size 1.

   Definition Classes
     Option

### Value Members

1.  final def !=(arg0: Any): Boolean

   Test two objects for inequality.

   Test two objects for inequality.

   returns

     `true` if !(this == that), false otherwise.

   Definition Classes
     AnyRef → Any
2.  final def ##: Int

   Equivalent to `x.hashCode` except for boxed numeric types and `null`.

   Equivalent to `x.hashCode` except for boxed numeric types and `null`. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For `null` returns a hashcode where `null.hashCode` throws a `NullPointerException`.

   returns

     a hash value consistent with ==

   Definition Classes
     AnyRef → Any
3.  def +(other: String): String
   Implicit
     This member is added by an implicit conversion from Some[A] toany2stringadd[Some[A]] performed by method any2stringadd in scala.Predef.
   Definition Classes
     any2stringadd
4.  final def ++[B >: A](suffix: collection.IterableOnce[B]): collection.Iterable[B]

   Alias for `concat`

   Alias for `concat`

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOps
   Annotations
     @inline()
5.  def ->[B](y: B): (Some[A], B)
   Implicit
     This member is added by an implicit conversion from Some[A] toArrowAssoc[Some[A]] performed by method ArrowAssoc in scala.Predef.
   Definition Classes
     ArrowAssoc
   Annotations
     @inline()
6.  final def ==(arg0: Any): Boolean

   The expression `x == that` is equivalent to `if (x eq null) that eq null else x.equals(that)`.

   The expression `x == that` is equivalent to `if (x eq null) that eq null else x.equals(that)`.

   returns

     `true` if the receiver object is equivalent to the argument; `false` otherwise.

   Definition Classes
     AnyRef → Any
7.  final def addString(b: collection.mutable.StringBuilder): collection.mutable.StringBuilder

   Appends all elements of this iterable collection to a string builder.

   Appends all elements of this iterable collection to a string builder. The written text consists of the string representations (w.r.t. the method `toString`) of all elements of this iterable collection without any separator string.

   Example:

       scala> val a = List(1,2,3,4)
       a: List[Int] = List(1, 2, 3, 4)

       scala> val b = new StringBuilder()
       b: StringBuilder =

       scala> val h = a.addString(b)
       h: StringBuilder = 1234

   b

     the string builder to which elements are appended.

   returns

     the string builder `b` to which elements were appended.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOnceOps
   Annotations
     @inline()
8.  final def addString(b: collection.mutable.StringBuilder, sep: String): collection.mutable.StringBuilder

   Appends all elements of this iterable collection to a string builder using a separator string.

   Appends all elements of this iterable collection to a string builder using a separator string. The written text consists of the string representations (w.r.t. the method `toString`) of all elements of this iterable collection, separated by the string `sep`.

   Example:

       scala> val a = List(1,2,3,4)
       a: List[Int] = List(1, 2, 3, 4)

       scala> val b = new StringBuilder()
       b: StringBuilder =

       scala> a.addString(b, ", ")
       res0: StringBuilder = 1, 2, 3, 4

   b

     the string builder to which elements are appended.

   sep

     the separator string.

   returns

     the string builder `b` to which elements were appended.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOnceOps
   Annotations
     @inline()
9.  def addString(b: collection.mutable.StringBuilder, start: String, sep: String, end: String): collection.mutable.StringBuilder

   Appends all elements of this iterable collection to a string builder using start, end, and separator strings.

   Appends all elements of this iterable collection to a string builder using start, end, and separator strings. The written text begins with the string `start` and ends with the string `end`. Inside, the string representations (w.r.t. the method `toString`) of all elements of this iterable collection are separated by the string `sep`.

   Example:

       scala> val a = List(1,2,3,4)
       a: List[Int] = List(1, 2, 3, 4)

       scala> val b = new StringBuilder()
       b: StringBuilder =

       scala> a.addString(b , "List(" , ", " , ")")
       res5: StringBuilder = List(1, 2, 3, 4)

   b

     the string builder to which elements are appended.

   start

     the starting string.

   sep

     the separator string.

   end

     the ending string.

   returns

     the string builder `b` to which elements were appended.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOnceOps
10.  final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type `T0`.

    Cast the receiver object to be of type `T0`.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression `1.asInstanceOf[String]` will throw a `ClassCastException` at runtime, while the expression `List(1).asInstanceOf[List[String]]` will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

    returns

      the receiver object.

    Definition Classes
      Any
    Exceptions thrown

      `ClassCastException` if the receiver object is not an instance of the erasure of type `T0`.

11.  def clone(): AnyRef

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the `clone` method is platform dependent.

    returns

      a copy of the receiver object.

    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.CloneNotSupportedException]) @native()
    Note

      not specified by SLS as a member of AnyRef

12.  final def collect[B](pf: PartialFunction[A, B]): Option[B]

    Returns a scala.Some containing the result of applying `pf` to this scala.Option's contained value, if this option is nonempty and `pf` is defined for that value.

    Returns a scala.Some containing the result of applying `pf` to this scala.Option's contained value, if this option is nonempty and `pf` is defined for that value. Returns `None` otherwise.

    pf

      the partial function.

    returns

      the result of applying `pf` to this scala.Option's value (if possible), or `None`.

    Definition Classes
      Option
    Annotations
      @inline()
    Example:

    1.     // Returns Some(HTTP) because the partial function covers the case.
           Some("http") collect {case "http" => "HTTP"}

           // Returns None because the partial function doesn't cover the case.
           Some("ftp") collect {case "http" => "HTTP"}

           // Returns None because the option is empty. There is no value to pass to the partial function.
           None collect {case value => value}

13.  def collectFirst[B](pf: PartialFunction[A, B]): Option[B]

    Finds the first element of the iterable collection for which the given partial function is defined, and applies the partial function to it.

    Finds the first element of the iterable collection for which the given partial function is defined, and applies the partial function to it.

    Note: may not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    pf

      the partial function

    returns

      an option value containing pf applied to the first value for which it is defined, or `None` if none exists.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Example:

    1. `Seq("a", 1, 5L).collectFirst({ case x: Int => x*10 }) = Some(10)`

14.  def concat[B >: A](suffix: collection.IterableOnce[B]): collection.Iterable[B]

    Returns a new iterable collection containing the elements from the left hand operand followed by the elements from the right hand operand.

    Returns a new iterable collection containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the iterable collection is the most specific superclass encompassing the element types of the two operands.

    B

      the element type of the returned collection.

    suffix

      the traversable to append.

    returns

      a new iterable collection which contains all elements of this iterable collection followed by all elements of `suffix`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
15.  final def contains[A1 >: A](elem: A1): Boolean

    Tests whether the option contains a given value as an element.

    Tests whether the option contains a given value as an element.

    This is equivalent to:

        option match {
          case Some(x) => x == elem
          case None    => false
        }

    elem

      the element to test.

    returns

      `true` if the option has an element that is equal (as determined by `==`) to `elem`, `false` otherwise.

    Definition Classes
      Option
    Example:

    1.     // Returns true because Some instance contains string "something" which equals "something".
           Some("something") contains "something"

           // Returns false because "something" != "anything".
           Some("something") contains "anything"

           // Returns false when method called on None.
           None contains "anything"

16.  def copyToArray[B >: A](xs: Array[B], start: Int, len: Int): Int

    Copy elements to an array, returning the number of elements written.

    Copy elements to an array, returning the number of elements written.

    Fills the given array `xs` starting at index `start` with at most `len` elements of this iterable collection.

    Copying will stop once either all the elements of this iterable collection have been copied, or the end of the array is reached, or `len` elements have been copied.

    B

      the type of the elements of the array.

    xs

      the array to fill.

    start

      the starting index of xs.

    len

      the maximal number of elements to copy.

    returns

      the number of elements written to the array

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Note

      Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

17.  def copyToArray[B >: A](xs: Array[B], start: Int): Int

    Copy elements to an array, returning the number of elements written.

    Copy elements to an array, returning the number of elements written.

    Fills the given array `xs` starting at index `start` with values of this iterable collection.

    Copying will stop once either all the elements of this iterable collection have been copied, or the end of the array is reached.

    B

      the type of the elements of the array.

    xs

      the array to fill.

    start

      the starting index of xs.

    returns

      the number of elements written to the array

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Annotations
      @deprecatedOverriding()
    Note

      Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

18.  def copyToArray[B >: A](xs: Array[B]): Int

    Copy elements to an array, returning the number of elements written.

    Copy elements to an array, returning the number of elements written.

    Fills the given array `xs` starting at index `start` with values of this iterable collection.

    Copying will stop once either all the elements of this iterable collection have been copied, or the end of the array is reached.

    B

      the type of the elements of the array.

    xs

      the array to fill.

    returns

      the number of elements written to the array

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Annotations
      @deprecatedOverriding()
    Note

      Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

19.  def corresponds[B](that: collection.IterableOnce[B])(p: (A, B) => Boolean): Boolean

    Tests whether every element of this collection's iterator relates to the corresponding element of another collection by satisfying a test predicate.

    Tests whether every element of this collection's iterator relates to the corresponding element of another collection by satisfying a test predicate.

    Note: will not terminate for infinite-sized collections.

    B

      the type of the elements of `that`

    that

      the other collection

    p

      the test predicate, which relates elements from both collections

    returns

      `true` if both collections have the same length and `p(x, y)` is `true` for all corresponding elements `x` of this iterator and `y` of `that`, otherwise `false`

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
20.  def drop(n: Int): collection.Iterable[A]

    Selects all elements except first n ones.

    Selects all elements except first n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

      the number of elements to drop from this iterable collection.

    returns

      a iterable collection consisting of all elements of this iterable collection except the first `n` ones, or else the empty iterable collection, if this iterable collection has less than `n` elements. If `n` is negative, don't drop any elements.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps → IterableOnceOps
21.  def dropRight(n: Int): collection.Iterable[A]

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

      the number of elements to drop from this iterable collection.

    returns

      a iterable collection consisting of all elements of this iterable collection except the last `n` ones, or else the empty iterable collection, if this iterable collection has less than `n` elements. If `n` is negative, don't drop any elements.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
22.  def dropWhile(p: (A) => Boolean): collection.Iterable[A]

    Drops longest prefix of elements that satisfy a predicate.

    Drops longest prefix of elements that satisfy a predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

      The predicate used to test elements.

    returns

      the longest suffix of this iterable collection whose first element does not satisfy the predicate `p`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps → IterableOnceOps
23.  def empty: collection.Iterable[A]

    The empty iterable of the same type as this iterable

    The empty iterable of the same type as this iterable

    returns

      an empty iterable of type `C`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableFactoryDefaults → IterableOps
24.  def ensuring(cond: (Some[A]) => Boolean, msg: => Any): Some[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toEnsuring[Some[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
25.  def ensuring(cond: (Some[A]) => Boolean): Some[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toEnsuring[Some[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
26.  def ensuring(cond: Boolean, msg: => Any): Some[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toEnsuring[Some[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
27.  def ensuring(cond: Boolean): Some[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toEnsuring[Some[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring
28.  final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (`that`) is a reference to the receiver object (`this`).

    Tests whether the argument (`that`) is a reference to the receiver object (`this`).

    The `eq` method implements an equivalence relation on non-null instances of `AnyRef`, and has three additional properties:

    - It is consistent: for any non-null instances `x` and `y` of type `AnyRef`, multiple invocations of `x.eq(y)` consistently returns `true` or consistently returns `false`.
    - For any non-null instance `x` of type `AnyRef`, `x.eq(null)` and `null.eq(x)` returns `false`.
    - `null.eq(null)` returns `true`.

    When overriding the `equals` or `hashCode` methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (`o1 eq o2`), they should be equal to each other (`o1 == o2`) and they should hash to the same value (`o1.hashCode == o2.hashCode`).

    returns

      `true` if the argument is a reference to the receiver object; `false` otherwise.

    Definition Classes
      AnyRef
29.  final def exists(p: (A) => Boolean): Boolean

    Returns true if this option is nonempty and the predicate `p` returns true when applied to this scala.Option's value.

    Returns true if this option is nonempty and the predicate `p` returns true when applied to this scala.Option's value. Otherwise, returns false.

    This is equivalent to:

        option match {
          case Some(x) => p(x)
          case None    => false
        }

    p

      the predicate to test

    Definition Classes
      Option
    Annotations
      @inline()
30.  final def filter(p: (A) => Boolean): Option[A]

    Returns this scala.Option if it is nonempty and applying the predicate `p` to this scala.Option's value returns true.

    Returns this scala.Option if it is nonempty and applying the predicate `p` to this scala.Option's value returns true. Otherwise, return `None`.

    This is equivalent to:

        option match {
          case Some(x) if p(x) => Some(x)
          case _               => None
        }

    p

      the predicate used for testing.

    Definition Classes
      Option
    Annotations
      @inline()
31.  final def filterNot(p: (A) => Boolean): Option[A]

    Returns this scala.Option if it is nonempty and applying the predicate `p` to this scala.Option's value returns false.

    Returns this scala.Option if it is nonempty and applying the predicate `p` to this scala.Option's value returns false. Otherwise, return `None`.

    This is equivalent to:

        option match {
          case Some(x) if !p(x) => Some(x)
          case _                => None
        }

    p

      the predicate used for testing.

    Definition Classes
      Option
    Annotations
      @inline()
32.  def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the `finalize` method is invoked, as well as the interaction between `finalize` and non-local returns and exceptions, are all platform dependent.

    Attributes
      protected[lang]
    Definition Classes
      AnyRef
    Annotations
      @throws(classOf[java.lang.Throwable])
    Note

      not specified by SLS as a member of AnyRef

33.  final def flatMap[B](f: (A) => Option[B]): Option[B]

    Returns the result of applying `f` to this scala.Option's value if this scala.Option is nonempty.

    Returns the result of applying `f` to this scala.Option's value if this scala.Option is nonempty. Returns `None` if this scala.Option is empty. Slightly different from `map` in that `f` is expected to return an scala.Option (which could be `None`).

    This is equivalent to:

        option match {
          case Some(x) => f(x)
          case None    => None
        }

    f

      the function to apply

    Definition Classes
      Option
    Annotations
      @inline()
    See also

      map

      foreach

34.  def flatten[B](implicit ev: <:<[A, Option[B]]): Option[B]

    Returns the nested scala.Option value if it is nonempty.

    Returns the nested scala.Option value if it is nonempty. Otherwise, return `None`.

    This is equivalent to:

        option match {
          case Some(Some(b)) => Some(b)
          case _             => None
        }

    ev

      an implicit conversion that asserts that the value is also an scala.Option.

    Definition Classes
      Option
    Example:

    1.     Some(Some("something")).flatten

    See also

      flatMap

35.  final def fold[B](ifEmpty: => B)(f: (A) => B): B

    Returns the result of applying `f` to this scala.Option's value if the scala.Option is nonempty.

    Returns the result of applying `f` to this scala.Option's value if the scala.Option is nonempty. Otherwise, evaluates expression `ifEmpty`.

    This is equivalent to:

        option match {
          case Some(x) => f(x)
          case None    => ifEmpty
        }

    This is also equivalent to:

        option map f getOrElse ifEmpty

    ifEmpty

      the expression to evaluate if empty.

    f

      the function to apply if nonempty.

    Definition Classes
      Option
    Annotations
      @inline()
36.  def foldLeft[B](z: B)(op: (B, A) => B): B

    Applies a binary operator to a start value and all elements of this iterable collection, going left to right.

    Applies a binary operator to a start value and all elements of this iterable collection, going left to right.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    B

      the result type of the binary operator.

    z

      the start value.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this iterable collection, going left to right with the start value `z` on the left: `op(...op(z, x1), x2, ..., xn)` where `x1, ..., xn` are the elements of this iterable collection. Returns `z` if this iterable collection is empty.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
37.  def foldRight[B](z: B)(op: (A, B) => B): B

    Applies a binary operator to all elements of this iterable collection and a start value, going right to left.

    Applies a binary operator to all elements of this iterable collection and a start value, going right to left.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    B

      the result type of the binary operator.

    z

      the start value.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this iterable collection, going right to left with the start value `z` on the right: `op(x1, op(x2, ... op(xn, z)...))` where `x1, ..., xn` are the elements of this iterable collection. Returns `z` if this iterable collection is empty.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
38.  final def forall(p: (A) => Boolean): Boolean

    Returns true if this option is empty or the predicate `p` returns true when applied to this scala.Option's value.

    Returns true if this option is empty or the predicate `p` returns true when applied to this scala.Option's value.

    This is equivalent to:

        option match {
          case Some(x) => p(x)
          case None    => true
        }

    p

      the predicate to test

    Definition Classes
      Option
    Annotations
      @inline()
39.  final def foreach[U](f: (A) => U): Unit

    Apply the given procedure `f` to the option's value, if it is nonempty.

    Apply the given procedure `f` to the option's value, if it is nonempty. Otherwise, do nothing.

    This is equivalent to:

        option match {
          case Some(x) => f(x)
          case None    => ()
        }

    f

      the procedure to apply.

    Definition Classes
      Option
    Annotations
      @inline()
    See also

      map

      flatMap

40.  def get: A

    Returns the option's value.

    Returns the option's value.

    This is equivalent to:

        option match {
          case Some(x) => x
          case None    => throw new Exception
        }

    Definition Classes
      Some → Option
    Exceptions thrown

      `NoSuchElementException` if the option is empty.

    Note

      The option must be nonempty.

41.  final def getClass(): Class[_ <: AnyRef]

    Returns the runtime class representation of the object.

    Returns the runtime class representation of the object.

    returns

      a class object corresponding to the runtime type of the receiver.

    Definition Classes
      AnyRef → Any
    Annotations
      @native()
42.  final def getOrElse[B >: A](default: => B): B

    Returns the option's value if the option is nonempty, otherwise return the result of evaluating `default`.

    Returns the option's value if the option is nonempty, otherwise return the result of evaluating `default`.

    This is equivalent to:

        option match {
          case Some(x) => x
          case None    => default
        }

    default

      the default expression.

    Definition Classes
      Option
    Annotations
      @inline()
43.  def groupBy[K](f: (A) => K): Map[K, collection.Iterable[A]]

    Partitions this iterable collection into a map of iterable collections according to some discriminator function.

    Partitions this iterable collection into a map of iterable collections according to some discriminator function.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    K

      the type of keys returned by the discriminator function.

    f

      the discriminator function.

    returns

      A map from keys to iterable collections such that the following invariant holds:

          (xs groupBy f)(k) = xs filter (x => f(x) == k)

      That is, every key `k` is bound to a iterable collection of those elements `x` for which `f(x)` equals `k`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
44.  def groupMap[K, B](key: (A) => K)(f: (A) => B): Map[K, collection.Iterable[B]]

    Partitions this iterable collection into a map of iterable collections according to a discriminator function `key`.

    Partitions this iterable collection into a map of iterable collections according to a discriminator function `key`. Each element in a group is transformed into a value of type `B` using the `value` function.

    It is equivalent to `groupBy(key).mapValues(_.map(f))`, but more efficient.

        case class User(name: String, age: Int)

        def namesByAge(users: Seq[User]): Map[Int, Seq[String]] =
          users.groupMap(_.age)(_.name)

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    K

      the type of keys returned by the discriminator function

    B

      the type of values returned by the transformation function

    key

      the discriminator function

    f

      the element transformation function

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
45.  def groupMapReduce[K, B](key: (A) => K)(f: (A) => B)(reduce: (B, B) => B): Map[K, B]

    Partitions this iterable collection into a map according to a discriminator function `key`.

    Partitions this iterable collection into a map according to a discriminator function `key`. All the values that have the same discriminator are then transformed by the `f` function and then reduced into a single value with the `reduce` function.

    It is equivalent to `groupBy(key).mapValues(_.map(f).reduce(reduce))`, but more efficient.

        def occurrences[A](as: Seq[A]): Map[A, Int] =
          as.groupMapReduce(identity)(_ => 1)(_ + _)

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
46.  def grouped(size: Int): collection.Iterator[collection.Iterable[A]]

    Partitions elements in fixed size iterable collections.

    Partitions elements in fixed size iterable collections.

    size

      the number of elements per group

    returns

      An iterator producing iterable collections of size `size`, except the last will be less than size `size` if the elements don't divide evenly.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    See also

      scala.collection.Iterator, method `grouped`

47.  def head: A

    Selects the first element of this iterable collection.

    Selects the first element of this iterable collection.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

      the first element of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    Exceptions thrown

      `NoSuchElementException` if the iterable collection is empty.

48.  def headOption: Option[A]

    Optionally selects the first element.

    Optionally selects the first element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

      the first element of this iterable collection if it is nonempty, `None` if it is empty.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
49.  def init: collection.Iterable[A]

    The initial part of the collection without its last element.

    The initial part of the collection without its last element.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
50.  def inits: collection.Iterator[collection.Iterable[A]]

    Iterates over the inits of this iterable collection.

    Iterates over the inits of this iterable collection. The first value will be this iterable collection and the final one will be an empty iterable collection, with the intervening values the results of successive applications of `init`.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    returns

      an iterator over all the inits of this iterable collection

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    Example:

    1. `List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)`

51.  final def isDefined: Boolean

    Returns true if the option is an instance of scala.Some, false otherwise.

    Returns true if the option is an instance of scala.Some, false otherwise.

    This is equivalent to:

        option match {
          case Some(_) => true
          case None    => false
        }

    Definition Classes
      Option
52.  final def isEmpty: Boolean

    Returns true if the option is `None`, false otherwise.

    Returns true if the option is `None`, false otherwise.

    This is equivalent to:

        option match {
          case Some(_) => false
          case None    => true
        }

    Definition Classes
      Option
53.  final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object has the same erasure as `T0`.

    Test whether the dynamic type of the receiver object has the same erasure as `T0`.

    Depending on what `T0` is, the test is done in one of the below ways:

    - `T0` is a non-parameterized class type, e.g. `BigDecimal`: this method returns `true` if the value of the receiver object is a `BigDecimal` or a subtype of `BigDecimal`.
    - `T0` is a parameterized class type, e.g. `List[Int]`: this method returns `true` if the value of the receiver object is some `List[X]` for any `X`. For example, `List(1, 2, 3).isInstanceOf[List[String]]` will return true.
    - `T0` is some singleton type `x.type` or literal `x`: this method returns `this.eq(x)`. For example, `x.isInstanceOf[1]` is equivalent to `x.eq(1)`
    - `T0` is an intersection `X with Y` or `X & Y: this method is equivalent to` x.isInstanceOf[X] && x.isInstanceOf[Y]``
    - `T0` is a union `X | Y`: this method is equivalent to `x.isInstanceOf[X] || x.isInstanceOf[Y]`
    - `T0` is a type parameter or an abstract type member: this method is equivalent to `isInstanceOf[U]` where `U` is `T0`'s upper bound, `Any` if `T0` is unbounded. For example, `x.isInstanceOf[A]` where `A` is an unbounded type parameter will return true for any value of `x`.

    This is exactly equivalent to the type pattern `_: T0`

    returns

      `true` if the receiver object is an instance of erasure of type `T0`; `false` otherwise.

    Definition Classes
      Any
    Note

      due to the unexpectedness of `List(1, 2, 3).isInstanceOf[List[String]]` returning true and `x.isInstanceOf[A]` where `A` is a type parameter or abstract member returning true, these forms issue a warning.

54.  def isTraversableAgain: Boolean

    Tests whether this iterable collection can be repeatedly traversed.

    Tests whether this iterable collection can be repeatedly traversed. Always true for Iterables and false for Iterators unless overridden.

    returns

      `true` if it is repeatedly traversable, `false` otherwise.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps → IterableOnceOps
55.  def iterableFactory: IterableFactory[collection.Iterable]

    The companion object of this iterable collection, providing various factory methods.

    The companion object of this iterable collection, providing various factory methods.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      Iterable → IterableOps
    Note

      When implementing a custom collection type and refining `CC` to the new type, this method needs to be overridden to return a factory for the new type (the compiler will issue an error otherwise).

56.  def iterator: Iterator[A]

    Returns a singleton iterator returning the scala.Option's value if it is nonempty, or an empty iterator if the option is empty.

    Returns a singleton iterator returning the scala.Option's value if it is nonempty, or an empty iterator if the option is empty.

    Definition Classes
      Option → IterableOnce
57.  final def knownSize: Int

    returns

      The number of elements in this option, if it can be cheaply computed, -1 otherwise. Cheaply usually means: Not requiring a collection traversal.

    Definition Classes
      Option → IterableOnce
58.  def last: A

    Selects the last element.

    Selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

      The last element of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    Exceptions thrown

      `NoSuchElementException` If the iterable collection is empty.

59.  def lastOption: Option[A]

    Optionally selects the last element.

    Optionally selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

      the last element of this iterable collection$ if it is nonempty, `None` if it is empty.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
60.  def lazyZip[B]: ([B](that: Iterable[B]): scala.collection.LazyZip2[A,B,_1.type]) forSome {val _1: collection.Iterable[A]}

    Analogous to `zip` except that the elements in each collection are not consumed until a strict operation is invoked on the returned `LazyZip2` decorator.

    Analogous to `zip` except that the elements in each collection are not consumed until a strict operation is invoked on the returned `LazyZip2` decorator.

    Calls to `lazyZip` can be chained to support higher arities (up to 4) without incurring the expense of constructing and deconstructing intermediary tuples.

        val xs = List(1, 2, 3)
        val res = (xs lazyZip xs lazyZip xs lazyZip xs).map((a, b, c, d) => a + b + c + d)
        // res == List(4, 8, 12)

    B

      the type of the second element in each eventual pair

    returns

      a decorator `LazyZip2` that allows strict operations to be performed on the lazily evaluated pairs or chained calls to `lazyZip`. Implicit conversion to `Iterable[(A, B)]` is also supported.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      Iterable
61.  final def map[B](f: (A) => B): Option[B]

    Returns a scala.Some containing the result of applying `f` to this scala.Option's value if this scala.Option is nonempty.

    Returns a scala.Some containing the result of applying `f` to this scala.Option's value if this scala.Option is nonempty. Otherwise return `None`.

    This is equivalent to:

        option match {
          case Some(x) => Some(f(x))
          case None    => None
        }

    f

      the function to apply

    Definition Classes
      Option
    Annotations
      @inline()
    Note

      This is similar to `flatMap` except here, `f` does not need to wrap its result in an scala.Option.

    See also

      flatMap

      foreach

62.  def max[B >: A](implicit ord: math.Ordering[B]): A

    Finds the largest element.

    Finds the largest element.

    Note: will not terminate for infinite-sized collections.

    B

      The type over which the ordering is defined.

    ord

      An ordering to be used for comparing elements.

    returns

      the largest element of this iterable collection with respect to the ordering `ord`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Exceptions thrown

      `UnsupportedOperationException` if this iterable collection is empty.

63.  def maxBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A

    Finds the first element which yields the largest value measured by function f.

    Finds the first element which yields the largest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

      The result type of the function f.

    f

      The measuring function.

    cmp

      An ordering to be used for comparing elements.

    returns

      the first element of this iterable collection with the largest value measured by function f with respect to the ordering `cmp`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Exceptions thrown

      `UnsupportedOperationException` if this iterable collection is empty.

64.  def maxByOption[B](f: (A) => B)(implicit cmp: math.Ordering[B]): Option[A]

    Finds the first element which yields the largest value measured by function f.

    Finds the first element which yields the largest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

      The result type of the function f.

    f

      The measuring function.

    cmp

      An ordering to be used for comparing elements.

    returns

      an option value containing the first element of this iterable collection with the largest value measured by function f with respect to the ordering `cmp`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
65.  def maxOption[B >: A](implicit ord: math.Ordering[B]): Option[A]

    Finds the largest element.

    Finds the largest element.

    Note: will not terminate for infinite-sized collections.

    B

      The type over which the ordering is defined.

    ord

      An ordering to be used for comparing elements.

    returns

      an option value containing the largest element of this iterable collection with respect to the ordering `ord`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
66.  def min[B >: A](implicit ord: math.Ordering[B]): A

    Finds the smallest element.

    Finds the smallest element.

    Note: will not terminate for infinite-sized collections.

    B

      The type over which the ordering is defined.

    ord

      An ordering to be used for comparing elements.

    returns

      the smallest element of this iterable collection with respect to the ordering `ord`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Exceptions thrown

      `UnsupportedOperationException` if this iterable collection is empty.

67.  def minBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A

    Finds the first element which yields the smallest value measured by function f.

    Finds the first element which yields the smallest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

      The result type of the function f.

    f

      The measuring function.

    cmp

      An ordering to be used for comparing elements.

    returns

      the first element of this iterable collection with the smallest value measured by function f with respect to the ordering `cmp`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Exceptions thrown

      `UnsupportedOperationException` if this iterable collection is empty.

68.  def minByOption[B](f: (A) => B)(implicit cmp: math.Ordering[B]): Option[A]

    Finds the first element which yields the smallest value measured by function f.

    Finds the first element which yields the smallest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

      The result type of the function f.

    f

      The measuring function.

    cmp

      An ordering to be used for comparing elements.

    returns

      an option value containing the first element of this iterable collection with the smallest value measured by function f with respect to the ordering `cmp`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
69.  def minOption[B >: A](implicit ord: math.Ordering[B]): Option[A]

    Finds the smallest element.

    Finds the smallest element.

    Note: will not terminate for infinite-sized collections.

    B

      The type over which the ordering is defined.

    ord

      An ordering to be used for comparing elements.

    returns

      an option value containing the smallest element of this iterable collection with respect to the ordering `ord`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
70.  final def ne(arg0: AnyRef): Boolean

    Equivalent to `!(this eq that)`.

    Equivalent to `!(this eq that)`.

    returns

      `true` if the argument is not a reference to the receiver object; `false` otherwise.

    Definition Classes
      AnyRef
71.  final def nonEmpty: Boolean

    Returns false if the option is `None`, true otherwise.

    Returns false if the option is `None`, true otherwise.

    This is equivalent to:

        option match {
          case Some(_) => true
          case None    => false
        }

    Definition Classes
      Option
    Note

      Implemented here to avoid the implicit conversion to Iterable.

72.  final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
      AnyRef
    Annotations
      @native()
    Note

      not specified by SLS as a member of AnyRef

73.  final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
      AnyRef
    Annotations
      @native()
    Note

      not specified by SLS as a member of AnyRef

74.  final def orElse[B >: A](alternative: => Option[B]): Option[B]

    Returns this scala.Option if it is nonempty, otherwise return the result of evaluating `alternative`.

    Returns this scala.Option if it is nonempty, otherwise return the result of evaluating `alternative`.

    This is equivalent to:

        option match {
          case Some(x) => Some(x)
          case None    => alternative
        }

    alternative

      the alternative expression.

    Definition Classes
      Option
    Annotations
      @inline()
75.  final def orNull[A1 >: A](implicit ev: <:<[Null, A1]): A1

    Returns the option's value if it is nonempty, or `null` if it is empty.

    Returns the option's value if it is nonempty, or `null` if it is empty.

    Although the use of null is discouraged, code written to use scala.Option must often interface with code that expects and returns nulls.

    This is equivalent to:

        option match {
          case Some(x) => x
          case None    => null
        }

    Definition Classes
      Option
    Annotations
      @inline()
    Example:

    1.     val initialText: Option[String] = getInitialText
           val textField = new JComponent(initialText.orNull,20)

76.  def partition(p: (A) => Boolean): (collection.Iterable[A], collection.Iterable[A])

    A pair of, first, all elements that satisfy predicate `p` and, second, all elements that do not.

    A pair of, first, all elements that satisfy predicate `p` and, second, all elements that do not. Interesting because it splits a collection in two.

    The default implementation provided here needs to traverse the collection twice. Strict collections have an overridden version of `partition` in `StrictOptimizedIterableOps`, which requires only a single traversal.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
77.  def partitionMap[A1, A2](f: (A) => Either[A1, A2]): (collection.Iterable[A1], collection.Iterable[A2])

    Applies a function `f` to each element of the iterable collection and returns a pair of iterable collections: the first one made of those values returned by `f` that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

    Applies a function `f` to each element of the iterable collection and returns a pair of iterable collections: the first one made of those values returned by `f` that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

    Example:

        val xs = `Iterable`(1, "one", 2, "two", 3, "three") partitionMap {
         case i: Int => Left(i)
         case s: String => Right(s)
        }
        // xs == (`Iterable`(1, 2, 3),
        //        `Iterable`(one, two, three))

    A1

      the element type of the first resulting collection

    A2

      the element type of the second resulting collection

    f

      the 'split function' mapping the elements of this iterable collection to an scala.util.Either

    returns

      a pair of iterable collections: the first one made of those values returned by `f` that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
78.  def product[B >: A](implicit num: math.Numeric[B]): B

    Multiplies up the elements of this collection.

    Multiplies up the elements of this collection.

    Note: will not terminate for infinite-sized collections.

    B

      the result type of the `*` operator.

    num

      an implicit parameter defining a set of numeric operations which includes the `*` operator to be used in forming the product.

    returns

      the product of all elements of this iterable collection with respect to the `*` operator in `num`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
79.  def productElementNames: Iterator[String]

    An iterator over the names of all the elements of this product.

    An iterator over the names of all the elements of this product.

    Definition Classes
      Product
80.  def reduce[B >: A](op: (B, B) => B): B

    Reduces the elements of this iterable collection using the specified associative binary operator.

    Reduces the elements of this iterable collection using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    B

      A type parameter for the binary operator, a supertype of `A`.

    op

      A binary operator that must be associative.

    returns

      The result of applying reduce operator `op` between all the elements if the iterable collection is nonempty.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Exceptions thrown

      `UnsupportedOperationException` if this iterable collection is empty.

81.  def reduceLeft[B >: A](op: (B, A) => B): B

    Applies a binary operator to all elements of this iterable collection, going left to right.

    Applies a binary operator to all elements of this iterable collection, going left to right.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    B

      the result type of the binary operator.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this iterable collection, going left to right: `op( op( ... op(x1, x2) ..., xn-1), xn)` where `x1, ..., xn` are the elements of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Exceptions thrown

      `UnsupportedOperationException` if this iterable collection is empty.

82.  def reduceLeftOption[B >: A](op: (B, A) => B): Option[B]

    Optionally applies a binary operator to all elements of this iterable collection, going left to right.

    Optionally applies a binary operator to all elements of this iterable collection, going left to right.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    B

      the result type of the binary operator.

    op

      the binary operator.

    returns

      an option value containing the result of `reduceLeft(op)` if this iterable collection is nonempty, `None` otherwise.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
83.  def reduceOption[B >: A](op: (B, B) => B): Option[B]

    Reduces the elements of this iterable collection, if any, using the specified associative binary operator.

    Reduces the elements of this iterable collection, if any, using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    B

      A type parameter for the binary operator, a supertype of `A`.

    op

      A binary operator that must be associative.

    returns

      An option value containing result of applying reduce operator `op` between all the elements if the collection is nonempty, and `None` otherwise.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
84.  def reduceRight[B >: A](op: (A, B) => B): B

    Applies a binary operator to all elements of this iterable collection, going right to left.

    Applies a binary operator to all elements of this iterable collection, going right to left.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    B

      the result type of the binary operator.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this iterable collection, going right to left: `op(x1, op(x2, ..., op(xn-1, xn)...))` where `x1, ..., xn` are the elements of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Exceptions thrown

      `UnsupportedOperationException` if this iterable collection is empty.

85.  def reduceRightOption[B >: A](op: (A, B) => B): Option[B]

    Optionally applies a binary operator to all elements of this iterable collection, going right to left.

    Optionally applies a binary operator to all elements of this iterable collection, going right to left.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    B

      the result type of the binary operator.

    op

      the binary operator.

    returns

      an option value containing the result of `reduceRight(op)` if this iterable collection is nonempty, `None` otherwise.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
86.  def scan[B >: A](z: B)(op: (B, B) => B): collection.Iterable[B]

    Computes a prefix scan of the elements of the collection.

    Computes a prefix scan of the elements of the collection.

    Note: The neutral element `z` may be applied more than once.

    B

      element type of the resulting collection

    z

      neutral element for the operator `op`

    op

      the associative operator for the scan

    returns

      a new iterable collection containing the prefix scan of the elements in this iterable collection

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
87.  def scanLeft[B](z: B)(op: (B, A) => B): collection.Iterable[B]

    Produces a iterable collection containing cumulative results of applying the operator going left to right, including the initial value.

    Produces a iterable collection containing cumulative results of applying the operator going left to right, including the initial value.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    B

      the type of the elements in the resulting collection

    z

      the initial value

    op

      the binary operator applied to the intermediate result and the element

    returns

      collection with intermediate results

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps → IterableOnceOps
88.  def scanRight[B](z: B)(op: (A, B) => B): collection.Iterable[B]

    Produces a collection containing cumulative results of applying the operator going right to left.

    Produces a collection containing cumulative results of applying the operator going right to left. The head of the collection is the last cumulative result.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    Example:

        List(1, 2, 3, 4).scanRight(0)(_ + _) == List(10, 9, 7, 4, 0)

    B

      the type of the elements in the resulting collection

    z

      the initial value

    op

      the binary operator applied to the intermediate result and the element

    returns

      collection with intermediate results

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
89.  def sizeCompare(that: collection.Iterable[_]): Int

    Compares the size of this iterable collection to the size of another `Iterable`.

    Compares the size of this iterable collection to the size of another `Iterable`.

    that

      the `Iterable` whose size is compared with this iterable collection's size.

    returns

      A value `x` where

          x <  0       if this.size <  that.size
          x == 0       if this.size == that.size
          x >  0       if this.size >  that.size

      The method as implemented here does not call `size` directly; its running time is `O(this.size min that.size)` instead of `O(this.size + that.size)`. The method should be overridden if computing `size` is cheap and `knownSize` returns `-1`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
90.  def sizeCompare(otherSize: Int): Int

    Compares the size of this iterable collection to a test value.

    Compares the size of this iterable collection to a test value.

    otherSize

      the test value that gets compared with the size.

    returns

      A value `x` where

          x <  0       if this.size <  otherSize
          x == 0       if this.size == otherSize
          x >  0       if this.size >  otherSize

      The method as implemented here does not call `size` directly; its running time is `O(size min otherSize)` instead of `O(size)`. The method should be overridden if computing `size` is cheap and `knownSize` returns `-1`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    See also

      sizeIs

91.  final def sizeIs: SizeCompareOps

    Returns a value class containing operations for comparing the size of this iterable collection to a test value.

    Returns a value class containing operations for comparing the size of this iterable collection to a test value.

    These operations are implemented in terms of `sizeCompare(Int)`, and allow the following more readable usages:

        this.sizeIs < size     // this.sizeCompare(size) < 0
        this.sizeIs <= size    // this.sizeCompare(size) <= 0
        this.sizeIs == size    // this.sizeCompare(size) == 0
        this.sizeIs != size    // this.sizeCompare(size) != 0
        this.sizeIs >= size    // this.sizeCompare(size) >= 0
        this.sizeIs > size     // this.sizeCompare(size) > 0

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    Annotations
      @inline()
92.  def slice(from: Int, until: Int): collection.Iterable[A]

    Selects an interval of elements.

    Selects an interval of elements. The returned iterable collection is made up of all elements `x` which satisfy the invariant:

        from <= indexOf(x) < until

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    from

      the lowest index to include from this iterable collection.

    until

      the lowest index to EXCLUDE from this iterable collection.

    returns

      a iterable collection containing the elements greater than or equal to index `from` extending up to (but not including) index `until` of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps → IterableOnceOps
93.  def sliding(size: Int, step: Int): collection.Iterator[collection.Iterable[A]]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.)

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.)

    The returned iterator will be empty when called on an empty collection. The last element the iterator produces may be smaller than the window size when the original collection isn't exhausted by the window before it and its last element isn't skipped by the step before it.

    size

      the number of elements per group

    step

      the distance between the first elements of successive groups

    returns

      An iterator producing iterable collections of size `size`, except the last element (which may be the only element) will be smaller if there are fewer than `size` elements remaining to be grouped.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    Examples:

    1. `List(1, 2, 3, 4, 5).sliding(2, 2) = Iterator(List(1, 2), List(3, 4), List(5))`

    ,

    2. `List(1, 2, 3, 4, 5, 6).sliding(2, 3) = Iterator(List(1, 2), List(4, 5))`

    See also

      scala.collection.Iterator, method `sliding`

94.  def sliding(size: Int): collection.Iterator[collection.Iterable[A]]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in `grouped`.)

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in `grouped`.)

    An empty collection returns an empty iterator, and a non-empty collection containing fewer elements than the window size returns an iterator that will produce the original collection as its only element.

    size

      the number of elements per group

    returns

      An iterator producing iterable collections of size `size`, except for a non-empty collection with less than `size` elements, which returns an iterator that produces the source collection itself as its only element.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    Examples:

    1. `List().sliding(2) = empty iterator`

    ,

    2. `List(1).sliding(2) = Iterator(List(1))`

    ,

    3. `List(1, 2).sliding(2) = Iterator(List(1, 2))`

    ,

    4. `List(1, 2, 3).sliding(2) = Iterator(List(1, 2), List(2, 3))`

    See also

      scala.collection.Iterator, method `sliding`

95.  def span(p: (A) => Boolean): (collection.Iterable[A], collection.Iterable[A])

    Splits this iterable collection into a prefix/suffix pair according to a predicate.

    Splits this iterable collection into a prefix/suffix pair according to a predicate.

    Note: `c span p` is equivalent to (but possibly more efficient than) `(c takeWhile p, c dropWhile p)`, provided the evaluation of the predicate `p` does not cause any side-effects.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

      the test predicate

    returns

      a pair consisting of the longest prefix of this iterable collection whose elements all satisfy `p`, and the rest of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps → IterableOnceOps
96.  def splitAt(n: Int): (collection.Iterable[A], collection.Iterable[A])

    Splits this iterable collection into a prefix/suffix pair at a given position.

    Splits this iterable collection into a prefix/suffix pair at a given position.

    Note: `c splitAt n` is equivalent to (but possibly more efficient than) `(c take n, c drop n)`.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

      the position at which to split.

    returns

      a pair of iterable collections consisting of the first `n` elements of this iterable collection, and the other elements.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps → IterableOnceOps
97.  def stepper[S <: Stepper[_]](implicit shape: StepperShape[A, S]): S

    Returns a scala.collection.Stepper for the elements of this collection.

    Returns a scala.collection.Stepper for the elements of this collection.

    The Stepper enables creating a Java stream to operate on the collection, see scala.jdk.StreamConverters. For collections holding primitive values, the Stepper can be used as an iterator which doesn't box the elements.

    The implicit scala.collection.StepperShape parameter defines the resulting Stepper type according to the element type of this collection.

    - For collections of `Int`, `Short`, `Byte` or `Char`, an scala.collection.IntStepper is returned
    - For collections of `Double` or `Float`, a scala.collection.DoubleStepper is returned
    - For collections of `Long` a scala.collection.LongStepper is returned
    - For any other element type, an scala.collection.AnyStepper is returned

    Note that this method is overridden in subclasses and the return type is refined to `S with EfficientSplit`, for example scala.collection.IndexedSeqOps.stepper. For Steppers marked with scala.collection.Stepper.EfficientSplit, the converters in scala.jdk.StreamConverters allow creating parallel streams, whereas bare Steppers can be converted only to sequential streams.

    Definition Classes
      IterableOnce
98.  def sum[B >: A](implicit num: math.Numeric[B]): B

    Sums up the elements of this collection.

    Sums up the elements of this collection.

    Note: will not terminate for infinite-sized collections.

    B

      the result type of the `+` operator.

    num

      an implicit parameter defining a set of numeric operations which includes the `+` operator to be used in forming the sum.

    returns

      the sum of all elements of this iterable collection with respect to the `+` operator in `num`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
99.  final def synchronized[T0](arg0: => T0): T0

    Executes the code in `body` with an exclusive lock on `this`.

    Executes the code in `body` with an exclusive lock on `this`.

    returns

      the result of `body`

    Definition Classes
      AnyRef
100.  def tail: collection.Iterable[A]

     The rest of the collection without its first element.

     The rest of the collection without its first element.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps
101.  def tails: collection.Iterator[collection.Iterable[A]]

     Iterates over the tails of this iterable collection.

     Iterates over the tails of this iterable collection. The first value will be this iterable collection and the final one will be an empty iterable collection, with the intervening values the results of successive applications of `tail`.

     returns

       an iterator over all the tails of this iterable collection

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps
     Example:

     1. `List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)`

102.  def take(n: Int): collection.Iterable[A]

     Selects the first n elements.

     Selects the first n elements.

     Note: might return different results for different runs, unless the underlying collection type is ordered.

     n

       the number of elements to take from this iterable collection.

     returns

       a iterable collection consisting only of the first `n` elements of this iterable collection, or else the whole iterable collection, if it has less than `n` elements. If `n` is negative, returns an empty iterable collection.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps → IterableOnceOps
103.  def takeRight(n: Int): collection.Iterable[A]

     Selects the last n elements.

     Selects the last n elements.

     Note: might return different results for different runs, unless the underlying collection type is ordered.

     n

       the number of elements to take from this iterable collection.

     returns

       a iterable collection consisting only of the last `n` elements of this iterable collection, or else the whole iterable collection, if it has less than `n` elements. If `n` is negative, returns an empty iterable collection.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps
104.  def takeWhile(p: (A) => Boolean): collection.Iterable[A]

     Takes longest prefix of elements that satisfy a predicate.

     Takes longest prefix of elements that satisfy a predicate.

     Note: might return different results for different runs, unless the underlying collection type is ordered.

     p

       The predicate used to test elements.

     returns

       the longest prefix of this iterable collection whose elements all satisfy the predicate `p`.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps → IterableOnceOps
105.  def tapEach[U](f: (A) => U): collection.Iterable[A]

     Applies a side-effecting function to each element in this collection.

     Applies a side-effecting function to each element in this collection. Strict collections will apply `f` to their elements immediately, while lazy collections like Views and LazyLists will only apply `f` on each element if and when that element is evaluated, and each time that element is evaluated.

     U

       the return type of f

     f

       a function to apply to each element in this iterable collection

     returns

       The same logical collection as this

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps → IterableOnceOps
106.  def to[C1](factory: Factory[A, C1]): C1

     Given a collection factory `factory`, convert this collection to the appropriate representation for the current element type `A`.

     Given a collection factory `factory`, convert this collection to the appropriate representation for the current element type `A`. Example uses:

     xs.to(List) xs.to(ArrayBuffer) xs.to(BitSet) // for xs: Iterable[Int]

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOnceOps
107.  def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]

     Convert collection to array.

     Convert collection to array.

     Implementation note: DO NOT call Array.from from this method.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOnceOps
108.  final def toLeft[X](right: => X): Either[A, X]

     Returns a scala.util.Right containing the given argument `right` if this is empty, or a scala.util.Left containing this scala.Option's value if this scala.Option is nonempty.

     Returns a scala.util.Right containing the given argument `right` if this is empty, or a scala.util.Left containing this scala.Option's value if this scala.Option is nonempty.

     This is equivalent to:

         option match {
           case Some(x) => Left(x)
           case None    => Right(right)
         }

     right

       the expression to evaluate and return if this is empty

     Definition Classes
       Option
     Annotations
       @inline()
     See also

       toRight

109.  def toList: List[A]

     Returns a singleton list containing the scala.Option's value if it is nonempty, or the empty list if the scala.Option is empty.

     Returns a singleton list containing the scala.Option's value if it is nonempty, or the empty list if the scala.Option is empty.

     This is equivalent to:

         option match {
           case Some(x) => List(x)
           case None    => Nil
         }

     Definition Classes
       Option
110.  def toMap[K, V](implicit ev: <:<[A, (K, V)]): Map[K, V]
     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOnceOps
111.  final def toRight[X](left: => X): Either[X, A]

     Returns a scala.util.Left containing the given argument `left` if this scala.Option is empty, or a scala.util.Right containing this scala.Option's value if this is nonempty.

     Returns a scala.util.Left containing the given argument `left` if this scala.Option is empty, or a scala.util.Right containing this scala.Option's value if this is nonempty.

     This is equivalent to:

         option match {
           case Some(x) => Right(x)
           case None    => Left(left)
         }

     left

       the expression to evaluate and return if this is empty

     Definition Classes
       Option
     Annotations
       @inline()
     See also

       toLeft

112.  def toString(): String

     Converts this iterable collection to a string.

     Converts this iterable collection to a string.

     returns

       a string representation of this collection. By default this string consists of the `className` of this iterable collection, followed by all elements separated by commas and enclosed in parentheses.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       Iterable → AnyRef → Any
113.  def transpose[B](implicit asIterable: (A) => collection.Iterable[B]): collection.Iterable[collection.Iterable[B]]

     Transposes this iterable collection of iterable collections into a iterable collection of iterable collections.

     Transposes this iterable collection of iterable collections into a iterable collection of iterable collections.

     The resulting collection's type will be guided by the static type of iterable collection. For example:

         val xs = List(
                    Set(1, 2, 3),
                    Set(4, 5, 6)).transpose
         // xs == List(
         //         List(1, 4),
         //         List(2, 5),
         //         List(3, 6))

         val ys = Vector(
                    List(1, 2, 3),
                    List(4, 5, 6)).transpose
         // ys == Vector(
         //         Vector(1, 4),
         //         Vector(2, 5),
         //         Vector(3, 6))

     Note: Even when applied to a view or a lazy collection it will always force the elements.

     B

       the type of the elements of each iterable collection.

     asIterable

       an implicit conversion which asserts that the element type of this iterable collection is an `Iterable`.

     returns

       a two-dimensional iterable collection of iterable collections which has as nth row the nth column of this iterable collection.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps
     Exceptions thrown

       `IllegalArgumentException` if all collections in this iterable collection are not of the same size.

114.  final def unzip[A1, A2](implicit asPair: <:<[A, (A1, A2)]): (Option[A1], Option[A2])

     Converts an Option of a pair into an Option of the first element and an Option of the second element.

     Converts an Option of a pair into an Option of the first element and an Option of the second element.

     This is equivalent to:

         option match {
           case Some((x, y)) => (Some(x), Some(y))
           case _            => (None,    None)
         }

     A1

       the type of the first half of the element pair

     A2

       the type of the second half of the element pair

     asPair

       an implicit conversion which asserts that the element type of this Option is a pair.

     returns

       a pair of Options, containing, respectively, the first and second half of the element pair of this Option.

     Definition Classes
       Option
115.  final def unzip3[A1, A2, A3](implicit asTriple: <:<[A, (A1, A2, A3)]): (Option[A1], Option[A2], Option[A3])

     Converts an Option of a triple into three Options, one containing the element from each position of the triple.

     Converts an Option of a triple into three Options, one containing the element from each position of the triple.

     This is equivalent to:

         option match {
           case Some((x, y, z)) => (Some(x), Some(y), Some(z))
           case _               => (None,    None,    None)
         }

     A1

       the type of the first of three elements in the triple

     A2

       the type of the second of three elements in the triple

     A3

       the type of the third of three elements in the triple

     asTriple

       an implicit conversion which asserts that the element type of this Option is a triple.

     returns

       a triple of Options, containing, respectively, the first, second, and third elements from the element triple of this Option.

     Definition Classes
       Option
116.  val value: A
117.  def view: View[A]

     A view over the elements of this collection.

     A view over the elements of this collection.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps
118.  final def wait(): Unit

     See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.

     See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.

     Definition Classes
       AnyRef
     Annotations
       @throws(classOf[java.lang.InterruptedException])
     Note

       not specified by SLS as a member of AnyRef

119.  final def wait(arg0: Long, arg1: Int): Unit

     See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-

     See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-

     Definition Classes
       AnyRef
     Annotations
       @throws(classOf[java.lang.InterruptedException])
     Note

       not specified by SLS as a member of AnyRef

120.  final def wait(arg0: Long): Unit

     See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.

     See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.

     Definition Classes
       AnyRef
     Annotations
       @throws(classOf[java.lang.InterruptedException]) @native()
     Note

       not specified by SLS as a member of AnyRef

121.  final def withFilter(p: (A) => Boolean): WithFilter

     Necessary to keep scala.Option from being implicitly converted to scala.collection.Iterable in `for` comprehensions.

     Necessary to keep scala.Option from being implicitly converted to scala.collection.Iterable in `for` comprehensions.

     Definition Classes
       Option
     Annotations
       @inline()
122.  final def zip[A1 >: A, B](that: Option[B]): Option[(A1, B)]

     Returns a scala.Some formed from this option and another option by combining the corresponding elements in a pair.

     Returns a scala.Some formed from this option and another option by combining the corresponding elements in a pair. If either of the two options is empty, `None` is returned.

     This is equivalent to:

         (option1, option2) match {
           case (Some(x), Some(y)) => Some((x, y))
           case _                  => None
         }

     that

       the options which is going to be zipped

     Definition Classes
       Option
     Example:

     1.     // Returns Some(("foo", "bar")) because both options are nonempty.
            Some("foo") zip Some("bar")

            // Returns None because `that` option is empty.
            Some("foo") zip None

            // Returns None because `this` option is empty.
            None zip Some("bar")

123.  def zipAll[A1 >: A, B](that: collection.Iterable[B], thisElem: A1, thatElem: B): collection.Iterable[(A1, B)]

     Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs.

     Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs. If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.

     that

       the iterable providing the second half of each result pair

     thisElem

       the element to be used to fill up the result if this iterable collection is shorter than `that`.

     thatElem

       the element to be used to fill up the result if `that` is shorter than this iterable collection.

     returns

       a new collection of type `That` containing pairs consisting of corresponding elements of this iterable collection and `that`. The length of the returned collection is the maximum of the lengths of this iterable collection and `that`. If this iterable collection is shorter than `that`, `thisElem` values are used to pad the result. If `that` is shorter than this iterable collection, `thatElem` values are used to pad the result.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps
124.  def zipWithIndex: collection.Iterable[(A, Int)]

     Zips this iterable collection with its indices.

     Zips this iterable collection with its indices.

     returns

       A new iterable collection containing pairs consisting of all elements of this iterable collection paired with their index. Indices start at `0`.

     Implicit
       This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
     Definition Classes
       IterableOps → IterableOnceOps
     Example:

     1. `List("a", "b", "c").zipWithIndex == List(("a", 0), ("b", 1), ("c", 2))`

### Shadowed Implicit Value Members

1.  def collect[B](pf: PartialFunction[A, B]): collection.Iterable[B]

   Builds a new iterable collection by applying a partial function to all elements of this iterable collection on which the function is defined.

   Builds a new iterable collection by applying a partial function to all elements of this iterable collection on which the function is defined.

   B

     the element type of the returned iterable collection.

   pf

     the partial function which filters and maps the iterable collection.

   returns

     a new iterable collection resulting from applying the given partial function `pf` to each element on which it is defined and collecting the results. The order of the elements is preserved.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is shadowed by one or more members in this class.
     To access this member you can use a type ascription:

         (some: Iterable[A]).collect(pf)

   Definition Classes
     IterableOps → IterableOnceOps
2.  def count(p: (A) => Boolean): Int

   Counts the number of elements in the iterable collection which satisfy a predicate.

   Counts the number of elements in the iterable collection which satisfy a predicate.

   Note: will not terminate for infinite-sized collections.

   p

     the predicate used to test elements.

   returns

     the number of elements satisfying the predicate `p`.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
     To access this member you can use a type ascription:

         (some: Iterable[A]).count(p)

   Definition Classes
     IterableOnceOps
3.  def exists(p: (A) => Boolean): Boolean

   Tests whether a predicate holds for at least one element of this iterable collection.

   Tests whether a predicate holds for at least one element of this iterable collection.

   Note: may not terminate for infinite-sized collections.

   p

     the predicate used to test elements.

   returns

     `true` if the given predicate `p` is satisfied by at least one element of this iterable collection, otherwise `false`

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is shadowed by one or more members in this class.
     To access this member you can use a type ascription:

         (some: Iterable[A]).exists(p)

   Definition Classes
     IterableOnceOps
4.  def filter(pred: (A) => Boolean): collection.Iterable[A]

   Selects all elements of this iterable collection which satisfy a predicate.

   Selects all elements of this iterable collection which satisfy a predicate.

   returns

     a new iterable collection consisting of all elements of this iterable collection that satisfy the given predicate `p`. The order of the elements is preserved.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is shadowed by one or more members in this class.
     To access this member you can use a type ascription:

         (some: Iterable[A]).filter(pred)

   Definition Classes
     IterableOps → IterableOnceOps
5.  def filterNot(pred: (A) => Boolean): collection.Iterable[A]

   Selects all elements of this iterable collection which do not satisfy a predicate.

   Selects all elements of this iterable collection which do not satisfy a predicate.

   pred

     the predicate used to test elements.

   returns

     a new iterable collection consisting of all elements of this iterable collection that do not satisfy the given predicate `pred`. Their order may not be preserved.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is shadowed by one or more members in this class.
     To access this member you can use a type ascription:

         (some: Iterable[A]).filterNot(pred)

   Definition Classes
     IterableOps → IterableOnceOps
6.  def find(p: (A) => Boolean): Option[A]

   Finds the first element of the iterable collection satisfying a predicate, if any.

   Finds the first element of the iterable collection satisfying a predicate, if any.

   Note: may not terminate for infinite-sized collections.

   Note: might return different results for different runs, unless the underlying collection type is ordered.

   p

     the predicate used to test elements.

   returns

     an option value containing the first element in the iterable collection that satisfies `p`, or `None` if none exists.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
     To access this member you can use a type ascription:

         (some: Iterable[A]).find(p)

   Definition Classes
     IterableOnceOps
7.  def flatMap[B](f: (A) => collection.IterableOnce[B]): collection.Iterable[B]

   Builds a new iterable collection by applying a function to all elements of this iterable collection and using the elements of the resulting collections.

   Builds a new iterable collection by applying a function to all elements of this iterable collection and using the elements of the resulting collections.

   For example:

       def getWords(lines: Seq[String]): Seq[String] = lines flatMap (line => line split "\\W+")

   The type of the resulting collection is guided by the static type of iterable collection. This might cause unexpected results sometimes. For example:

       // lettersOf will return a Seq[Char] of likely repeated letters, instead of a Set
       def lettersOf(words: Seq[String]) = words flatMap (word => word.toSet)

       // lettersOf will return a Set[Char], not a Seq
       def lettersOf(words: Seq[String]) = words.toSet flatMap ((word: String) => word.toSeq)

       // xs will be an Iterable[Int]
       val xs = Map("a" -> List(11,111), "b" -> List(22,222)).flatMap(_._2)

       // ys will be a Map[Int, Int]
       val ys = Map("a" -> List(1 -> 11,1 -> 111), "b" -> List(2 -> 22,2 -> 222)).flatMap(_._2)

   B

     the element type of the returned collection.

   f

     the function to apply to each element.

   returns

     a new iterable collection resulting from applying the given collection-valued function `f` to each element of this iterable collection and concatenating the results.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is shadowed by one or more members in this class.
     To access this member you can use a type ascription:

         (some: Iterable[A]).flatMap(f)

   Definition Classes
     IterableOps → IterableOnceOps
8.  def flatten[B](implicit asIterable: (A) => collection.IterableOnce[B]): collection.Iterable[B]

   Converts this iterable collection of traversable collections into a iterable collection formed by the elements of these traversable collections.

   Converts this iterable collection of traversable collections into a iterable collection formed by the elements of these traversable collections.

   The resulting collection's type will be guided by the type of iterable collection. For example:

       val xs = List(
                  Set(1, 2, 3),
                  Set(1, 2, 3)
                ).flatten
       // xs == List(1, 2, 3, 1, 2, 3)

       val ys = Set(
                  List(1, 2, 3),
                  List(3, 2, 1)
                ).flatten
       // ys == Set(1, 2, 3)

   B

     the type of the elements of each traversable collection.

   asIterable

     an implicit conversion which asserts that the element type of this iterable collection is a `GenTraversable`.

   returns

     a new iterable collection resulting from concatenating all element iterable collections.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is shadowed by one or more members in this class.
     To access this member you can use a type ascription:

         (some: Iterable[A]).flatten(asIterable)

   Definition Classes
     IterableOps → IterableOnceOps
9.  def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1

   Folds the elements of this iterable collection using the specified associative binary operator.

   Folds the elements of this iterable collection using the specified associative binary operator. The default implementation in `IterableOnce` is equivalent to `foldLeft` but may be overridden for more efficient traversal orders.

   The order in which operations are performed on elements is unspecified and may be nondeterministic.

   Note: will not terminate for infinite-sized collections.

   A1

     a type parameter for the binary operator, a supertype of `A`.

   z

     a neutral element for the fold operation; may be added to the result an arbitrary number of times, and must not change the result (e.g., `Nil` for list concatenation, 0 for addition, or 1 for multiplication).

   op

     a binary operator that must be associative.

   returns

     the result of applying the fold operator `op` between all the elements and `z`, or `z` if this iterable collection is empty.

   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Shadowing
     This implicitly inherited member is shadowed by one or more members in this class.
     To access this member you can use a type ascription:

         (some: Iterable[A]).fold(z)(op)

   Definition Classes
     IterableOnceOps
10.  def forall(p: (A) => Boolean): Boolean

    Tests whether a predicate holds for all elements of this iterable collection.

    Tests whether a predicate holds for all elements of this iterable collection.

    Note: may not terminate for infinite-sized collections.

    p

      the predicate used to test elements.

    returns

      `true` if this iterable collection is empty or the given predicate `p` holds for all elements of this iterable collection, otherwise `false`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: Iterable[A]).forall(p)

    Definition Classes
      IterableOnceOps
11.  def foreach[U](f: (A) => U): Unit

    Apply `f` to each element for its side effects Note: [U] parameter needed to help scalac's type inference.

    Apply `f` to each element for its side effects Note: [U] parameter needed to help scalac's type inference.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: Iterable[A]).foreach(f)

    Definition Classes
      IterableOnceOps
12.  def isEmpty: Boolean

    Tests whether the iterable collection is empty.

    Tests whether the iterable collection is empty.

    Note: Implementations in subclasses that are not repeatedly traversable must take care not to consume any elements when `isEmpty` is called.

    returns

      `true` if the iterable collection contains no elements, `false` otherwise.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: Iterable[A]).isEmpty

    Definition Classes
      IterableOnceOps
13.  def iterator: collection.Iterator[A]

    Iterator can be used only once

    Iterator can be used only once

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: Iterable[A]).iterator

    Definition Classes
      IterableOnce
14.  def knownSize: Int

    returns

      The number of elements in this iterable collection, if it can be cheaply computed, -1 otherwise. Cheaply usually means: Not requiring a collection traversal.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: Iterable[A]).knownSize

    Definition Classes
      IterableOnce
15.  def map[B](f: (A) => B): collection.Iterable[B]

    Builds a new iterable collection by applying a function to all elements of this iterable collection.

    Builds a new iterable collection by applying a function to all elements of this iterable collection.

    B

      the element type of the returned iterable collection.

    f

      the function to apply to each element.

    returns

      a new iterable collection resulting from applying the given function `f` to each element of this iterable collection and collecting the results.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: Iterable[A]).map(f)

    Definition Classes
      IterableOps → IterableOnceOps
16.  final def mkString: String

    Displays all elements of this iterable collection in a string.

    Displays all elements of this iterable collection in a string.

    Delegates to addString, which can be overridden.

    returns

      a string representation of this iterable collection. In the resulting string the string representations (w.r.t. the method `toString`) of all elements of this iterable collection follow each other without any separator string.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: Iterable[A]).mkString

    Definition Classes
      IterableOnceOps
    Annotations
      @inline()
17.  final def mkString(sep: String): String

    Displays all elements of this iterable collection in a string using a separator string.

    Displays all elements of this iterable collection in a string using a separator string.

    Delegates to addString, which can be overridden.

    sep

      the separator string.

    returns

      a string representation of this iterable collection. In the resulting string the string representations (w.r.t. the method `toString`) of all elements of this iterable collection are separated by the string `sep`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: Iterable[A]).mkString(sep)

    Definition Classes
      IterableOnceOps
    Annotations
      @inline()
    Example:

    1. `List(1, 2, 3).mkString("|") = "1|2|3"`

18.  final def mkString(start: String, sep: String, end: String): String

    Displays all elements of this iterable collection in a string using start, end, and separator strings.

    Displays all elements of this iterable collection in a string using start, end, and separator strings.

    Delegates to addString, which can be overridden.

    start

      the starting string.

    sep

      the separator string.

    end

      the ending string.

    returns

      a string representation of this iterable collection. The resulting string begins with the string `start` and ends with the string `end`. Inside, the string representations (w.r.t. the method `toString`) of all elements of this iterable collection are separated by the string `sep`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: Iterable[A]).mkString(start, sep, end)

    Definition Classes
      IterableOnceOps
    Example:

    1. `List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"`

19.  def nonEmpty: Boolean

    Tests whether the iterable collection is not empty.

    Tests whether the iterable collection is not empty.

    returns

      `true` if the iterable collection contains at least one element, `false` otherwise.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: Iterable[A]).nonEmpty

    Definition Classes
      IterableOnceOps
    Annotations
      @deprecatedOverriding()
20.  def size: Int

    The size of this iterable collection.

    The size of this iterable collection.

    Note: will not terminate for infinite-sized collections.

    returns

      the number of elements in this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
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          (some: Iterable[A]).size

    Definition Classes
      IterableOnceOps
21.  def stepper[S <: Stepper[_]](implicit shape: StepperShape[A, S]): S

    Returns a scala.collection.Stepper for the elements of this collection.

    Returns a scala.collection.Stepper for the elements of this collection.

    The Stepper enables creating a Java stream to operate on the collection, see scala.jdk.StreamConverters. For collections holding primitive values, the Stepper can be used as an iterator which doesn't box the elements.

    The implicit scala.collection.StepperShape parameter defines the resulting Stepper type according to the element type of this collection.

    - For collections of `Int`, `Short`, `Byte` or `Char`, an scala.collection.IntStepper is returned
    - For collections of `Double` or `Float`, a scala.collection.DoubleStepper is returned
    - For collections of `Long` a scala.collection.LongStepper is returned
    - For any other element type, an scala.collection.AnyStepper is returned

    Note that this method is overridden in subclasses and the return type is refined to `S with EfficientSplit`, for example scala.collection.IndexedSeqOps.stepper. For Steppers marked with scala.collection.Stepper.EfficientSplit, the converters in scala.jdk.StreamConverters allow creating parallel streams, whereas bare Steppers can be converted only to sequential streams.

    Implicit
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    Definition Classes
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22.  final def toBuffer[B >: A]: Buffer[B]
    Implicit
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    Shadowing
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    Definition Classes
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    Annotations
      @inline()
23.  def toIndexedSeq: collection.immutable.IndexedSeq[A]
    Implicit
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    Definition Classes
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24.  def toList: collection.immutable.List[A]
    Implicit
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    Definition Classes
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25.  def toSeq: collection.immutable.Seq[A]

    returns

      This collection as a `Seq[A]`. This is equivalent to `to(Seq)` but might be faster.

    Implicit
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26.  def toSet[B >: A]: Set[B]
    Implicit
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27.  def toVector: collection.immutable.Vector[A]
    Implicit
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    Definition Classes
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28.  def unzip[A1, A2](implicit asPair: (A) => (A1, A2)): (collection.Iterable[A1], collection.Iterable[A2])

    Converts this iterable collection of pairs into two collections of the first and second half of each pair.

    Converts this iterable collection of pairs into two collections of the first and second half of each pair.

        val xs = `Iterable`(
                   (1, "one"),
                   (2, "two"),
                   (3, "three")).unzip
        // xs == (`Iterable`(1, 2, 3),
        //        `Iterable`(one, two, three))

    A1

      the type of the first half of the element pairs

    A2

      the type of the second half of the element pairs

    asPair

      an implicit conversion which asserts that the element type of this iterable collection is a pair.

    returns

      a pair of iterable collections, containing the first, respectively second half of each element pair of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
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    Definition Classes
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29.  def unzip3[A1, A2, A3](implicit asTriple: (A) => (A1, A2, A3)): (collection.Iterable[A1], collection.Iterable[A2], collection.Iterable[A3])

    Converts this iterable collection of triples into three collections of the first, second, and third element of each triple.

    Converts this iterable collection of triples into three collections of the first, second, and third element of each triple.

        val xs = `Iterable`(
                   (1, "one", '1'),
                   (2, "two", '2'),
                   (3, "three", '3')).unzip3
        // xs == (`Iterable`(1, 2, 3),
        //        `Iterable`(one, two, three),
        //        `Iterable`(1, 2, 3))

    A1

      the type of the first member of the element triples

    A2

      the type of the second member of the element triples

    A3

      the type of the third member of the element triples

    asTriple

      an implicit conversion which asserts that the element type of this iterable collection is a triple.

    returns

      a triple of iterable collections, containing the first, second, respectively third member of each element triple of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
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    Definition Classes
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30.  def withFilter(p: (A) => Boolean): collection.WithFilter[A, collection.Iterable]

    Creates a non-strict filter of this iterable collection.

    Creates a non-strict filter of this iterable collection.

    Note: the difference between `c filter p` and `c withFilter p` is that the former creates a new collection, whereas the latter only restricts the domain of subsequent `map`, `flatMap`, `foreach`, and `withFilter` operations.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

      the predicate used to test elements.

    returns

      an object of class `WithFilter`, which supports `map`, `flatMap`, `foreach`, and `withFilter` operations. All these operations apply to those elements of this iterable collection which satisfy the predicate `p`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
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    Definition Classes
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31.  def zip[B](that: collection.IterableOnce[B]): collection.Iterable[(A, B)]

    Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs.

    Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs. If one of the two collections is longer than the other, its remaining elements are ignored.

    B

      the type of the second half of the returned pairs

    that

      The iterable providing the second half of each result pair

    returns

      a new iterable collection containing pairs consisting of corresponding elements of this iterable collection and `that`. The length of the returned collection is the minimum of the lengths of this iterable collection and `that`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
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    Definition Classes
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### Deprecated Value Members

1.  def ++:[B >: A](that: collection.IterableOnce[B]): collection.Iterable[B]
   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOps
   Annotations
     @deprecated
   Deprecated

     (Since version 2.13.0) Use ++ instead of ++: for collections of type Iterable

2.  final def /:[B](z: B)(op: (B, A) => B): B
   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOnceOps
   Annotations
     @deprecated @inline()
   Deprecated

     (Since version 2.13.0) Use foldLeft instead of /:

3.  def /:[B](z: B)(op: (B, A) => B): B
   Implicit
     This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
   Definition Classes
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   Annotations
     @deprecated @inline()
   Deprecated

     (Since version 2.13.0) Use .iterator.foldLeft instead

4.  final def :\[B](z: B)(op: (A, B) => B): B
   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOnceOps
   Annotations
     @deprecated @inline()
   Deprecated

     (Since version 2.13.0) Use foldRight instead of :\

5.  def :\[B](z: B)(op: (A, B) => B): B
   Implicit
     This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
   Definition Classes
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   Annotations
     @deprecated @inline()
   Deprecated

     (Since version 2.13.0) Use .iterator.foldRight instead

6.  def aggregate[B](z: => B)(seqop: (B, A) => B, combop: (B, B) => B): B
   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOnceOps
   Annotations
     @deprecated
   Deprecated

     (Since version 2.13.0) `aggregate` is not relevant for sequential collections. Use `foldLeft(z)(seqop)` instead.

7.  def collectFirst[B](f: PartialFunction[A, B]): Option[B]
   Implicit
     This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
   Definition Classes
     IterableOnceExtensionMethods
   Annotations
     @deprecated
   Deprecated

     (Since version 2.13.0) Use .iterator.collectFirst(...) instead

8.  def companion: IterableFactory[collection.Iterable]
   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOps
   Annotations
     @deprecated @deprecatedOverriding() @inline()
   Deprecated

     (Since version 2.13.0) Use iterableFactory instead

9.  final def copyToBuffer[B >: A](dest: Buffer[B]): Unit
   Implicit
     This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
   Definition Classes
     IterableOnceOps
   Annotations
     @deprecated @inline()
   Deprecated

     (Since version 2.13.0) Use `dest ++= coll` instead

10.  def copyToBuffer(dest: Buffer[A]): Unit
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.copyToBuffer(...) instead

11.  def count(f: (A) => Boolean): Int
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
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    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.count(...) instead

12.  def exists(f: (A) => Boolean): Boolean
    Implicit
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    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.exists(...) instead

13.  def filter(f: (A) => Boolean): collection.Iterator[A]
    Implicit
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    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.filter(...) instead

14.  def find(p: (A) => Boolean): Option[A]
    Implicit
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    Shadowing
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    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.find instead

15.  def flatMap[B](f: (A) => collection.IterableOnce[B]): collection.IterableOnce[B]
    Implicit
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          (some: IterableOnceExtensionMethods[A]).flatMap(f)

    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.flatMap instead or consider requiring an Iterable

16.  def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1
    Implicit
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.fold instead

17.  def foldLeft[B](z: B)(op: (B, A) => B): B
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
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    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.foldLeft instead

18.  def foldRight[B](z: B)(op: (A, B) => B): B
    Implicit
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    Definition Classes
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    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.foldRight instead

19.  def forall(f: (A) => Boolean): Boolean
    Implicit
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.forall(...) instead

20.  def foreach[U](f: (A) => U): Unit
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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      This implicitly inherited member is shadowed by one or more members in this class.
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          (some: IterableOnceExtensionMethods[A]).foreach(f)

    Definition Classes
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    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.foreach(...) instead

21.  def formatted(fmtstr: String): String

    Returns string formatted according to given `format` string.

    Returns string formatted according to given `format` string. Format strings are as for `String.format` (@see java.lang.String.format).

    Implicit
      This member is added by an implicit conversion from Some[A] toStringFormat[Some[A]] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.12.16) Use `formatString.format(value)` instead of `value.formatted(formatString)`, or use the `f""` string interpolator. In Java 15 and later, `formatted` resolves to the new method in String which has reversed parameters.

22.  def hasDefiniteSize: Boolean

    Tests whether this iterable collection is known to have a finite size.

    Tests whether this iterable collection is known to have a finite size. All strict collections are known to have finite size. For a non-strict collection such as `Stream`, the predicate returns `true` if all elements have been computed. It returns `false` if the stream is not yet evaluated to the end. Non-empty Iterators usually return `false` even if they were created from a collection with a known finite size.

    Note: many collection methods will not work on collections of infinite sizes. The typical failure mode is an infinite loop. These methods always attempt a traversal without checking first that `hasDefiniteSize` returns `true`. However, checking `hasDefiniteSize` can provide an assurance that size is well-defined and non-termination is not a concern.

    returns

      `true` if this collection is known to have finite size, `false` otherwise.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOnceOps
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Check .knownSize instead of .hasDefiniteSize for more actionable information (see scaladoc for details)

    See also

      method `knownSize` for a more useful alternative

23.  def isEmpty: Boolean
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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      This implicitly inherited member is shadowed by one or more members in this class.
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    Annotations
      @deprecated
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      (Since version 2.13.0) Use .iterator.isEmpty instead

24.  def map[B](f: (A) => B): collection.IterableOnce[B]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.map instead or consider requiring an Iterable

25.  def max(implicit ord: math.Ordering[A]): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.max instead

26.  def maxBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.maxBy(...) instead

27.  def min(implicit ord: math.Ordering[A]): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.min instead

28.  def minBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.minBy(...) instead

29.  def mkString: String
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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    Definition Classes
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      (Since version 2.13.0) Use .iterator.mkString instead

30.  def mkString(sep: String): String
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
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      (Since version 2.13.0) Use .iterator.mkString instead

31.  def mkString(start: String, sep: String, end: String): String
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
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32.  def nonEmpty: Boolean
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
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          (some: IterableOnceExtensionMethods[A]).nonEmpty

    Definition Classes
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    Deprecated

      (Since version 2.13.0) Use .iterator.nonEmpty instead

33.  def product(implicit num: math.Numeric[A]): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
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    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.product instead

34.  def reduce(f: (A, A) => A): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.reduce(...) instead

35.  def reduceLeft(f: (A, A) => A): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.reduceLeft(...) instead

36.  def reduceLeftOption(f: (A, A) => A): Option[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.reduceLeftOption(...) instead

37.  def reduceOption(f: (A, A) => A): Option[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.reduceOption(...) instead

38.  def reduceRight(f: (A, A) => A): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.reduceRight(...) instead

39.  def reduceRightOption(f: (A, A) => A): Option[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.reduceRightOption(...) instead

40.  final def repr: collection.Iterable[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use coll instead of repr in a collection implementation, use the collection value itself from the outside

41.  def sameElements[B >: A](that: collection.IterableOnce[B]): Boolean
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.sameElements instead

42.  def seq: collection.Iterable[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      Iterable
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Iterable.seq always returns the iterable itself

43.  def size: Int
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).size

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.size instead

44.  def sum(implicit num: math.Numeric[A]): A
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.sum instead

45.  def to[C1](factory: Factory[A, C1]): C1
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.to(factory) instead

46.  def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.toArray

47.  def toBuffer[B >: A]: Buffer[B]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toBuffer

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.to(ArrayBuffer) instead

48.  def toIndexedSeq: collection.IndexedSeq[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toIndexedSeq

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.toIndexedSeq instead

49.  final def toIterable: collection.Iterable[A]

    returns

      This collection as an `Iterable[A]`. No new collection will be built if `this` is already an `Iterable[A]`.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: Iterable[A]).toIterable

    Definition Classes
      Iterable → IterableOps
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.7) toIterable is internal and will be made protected; its name is similar to `toList` or `toSeq`, but it doesn't copy non-immutable collections

50.  final def toIterable: collection.Iterable[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toIterable

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.to(Iterable) instead

51.  final def toIterator: collection.Iterator[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: Iterable[A]).toIterator

    Definition Classes
      IterableOnceOps
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator instead of .toIterator

52.  def toIterator: collection.Iterator[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toIterator

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator instead

53.  def toList: collection.immutable.List[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toList

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.to(List) instead

54.  def toMap[K, V](implicit ev: <:<[A, (K, V)]): Map[K, V]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.to(Map) instead

55.  def toSeq: collection.immutable.Seq[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toSeq

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.to(Seq) instead

56.  def toSet[B >: A]: Set[B]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toSet

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.to(Set) instead

57.  final def toStream: collection.immutable.Stream[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: Iterable[A]).toStream

    Definition Classes
      IterableOnceOps
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .to(LazyList) instead of .toStream

58.  def toStream: collection.immutable.Stream[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toStream

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.to(LazyList) instead

59.  final def toTraversable: collection.Traversable[A]

    Converts this iterable collection to an unspecified Iterable.

    Converts this iterable collection to an unspecified Iterable. Will return the same collection if this instance is already Iterable.

    returns

      An Iterable containing all elements of this iterable collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: Iterable[A]).toTraversable

    Definition Classes
      IterableOps
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) toTraversable is internal and will be made protected; its name is similar to `toList` or `toSeq`, but it doesn't copy non-immutable collections

60.  final def toTraversable: collection.Traversable[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toTraversable

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.to(Iterable) instead

61.  def toVector: collection.immutable.Vector[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is ambiguous. One or more implicitly inherited members have similar signatures, so calling this member may produce an ambiguous implicit conversion compiler error.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).toVector

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated @inline()
    Deprecated

      (Since version 2.13.0) Use .iterator.to(Vector) instead

62.  def view(from: Int, until: Int): View[A]

    A view over a slice of the elements of this collection.

    A view over a slice of the elements of this collection.

    Implicit
      This member is added by an implicit conversion from Some[A] toIterable[A] performed by method option2Iterable in scala.Option.
    Definition Classes
      IterableOps
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .view.slice(from, until) instead of .view(from, until)

63.  def withFilter(f: (A) => Boolean): collection.Iterator[A]
    Implicit
      This member is added by an implicit conversion from Some[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
      This implicitly inherited member is shadowed by one or more members in this class.
      To access this member you can use a type ascription:

          (some: IterableOnceExtensionMethods[A]).withFilter(f)

    Definition Classes
      IterableOnceExtensionMethods
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use .iterator.withFilter(...) instead

64.  def →[B](y: B): (Some[A], B)
    Implicit
      This member is added by an implicit conversion from Some[A] toArrowAssoc[Some[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc
    Annotations
      @deprecated
    Deprecated

      (Since version 2.13.0) Use `->` instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

### Inherited from Option[A]

### Inherited from java.io.Serializable

### Inherited from Product

### Inherited from Equals

### Inherited from collection.IterableOnce[A]

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion option2Iterable fromSome[A] to Iterable[A]

### Inherited by implicit conversion iterableOnceExtensionMethods fromSome[A] to IterableOnceExtensionMethods[A]

### Inherited by implicit conversion any2stringadd fromSome[A] to any2stringadd[Some[A]]

### Inherited by implicit conversion StringFormat fromSome[A] to StringFormat[Some[A]]

### Inherited by implicit conversion Ensuring fromSome[A] to Ensuring[Some[A]]

### Inherited by implicit conversion ArrowAssoc fromSome[A] to ArrowAssoc[Some[A]]

### Ungrouped