Packages

trait IndexedSeqView[+A] extends IndexedSeqOps[A, View, View[A]] with SeqView[A]

View defined in terms of indexing a range

Self Type
IndexedSeqView[A]
Source
IndexedSeqView.scala
Linear Supertypes
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Inherited
  1. IndexedSeqView
  2. SeqView
  3. View
  4. Serializable
  5. Iterable
  6. IterableFactoryDefaults
  7. IndexedSeqOps
  8. SeqOps
  9. IterableOps
  10. IterableOnceOps
  11. IterableOnce
  12. AnyRef
  13. Any
Implicitly
  1. by iterableOnceExtensionMethods
  2. by any2stringadd
  3. by StringFormat
  4. by Ensuring
  5. by ArrowAssoc
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Visibility
  1. Public
  2. Protected

Abstract Value Members

  1. abstract def apply(i: Int): A

    Get the element at the specified index.

    Get the element at the specified index. This operation is provided for convenience in Seq. It should not be assumed to be efficient unless you have an IndexedSeq.

    Definition Classes
    SeqOps
    Annotations
    @throws(cause = scala.this.throws.<init>$default$1[IndexOutOfBoundsException])
  2. abstract def length: Int

    The length (number of elements) of the view.

    The length (number of elements) of the view. size is an alias for length in Seq collections.

    Definition Classes
    SeqOps

Concrete 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 IndexedSeqView[A] toany2stringadd[IndexedSeqView[A]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. final def ++[B >: A](suffix: IterableOnce[B]): View[B]

    Alias for concat

    Alias for concat

    Definition Classes
    IterableOps
    Annotations
    @inline()
  5. final def ++:[B >: A](prefix: IterableOnce[B]): View[B]

    Alias for prependedAll

    Alias for prependedAll

    Definition Classes
    SeqOpsIterableOps
    Annotations
    @inline()
  6. final def +:[B >: A](elem: B): View[B]

    Alias for prepended.

    Alias for prepended.

    Note that :-ending operators are right associative (see example). A mnemonic for +: vs. :+ is: the COLon goes on the COLlection side.

    Definition Classes
    SeqOps
    Annotations
    @inline()
  7. def ->[B](y: B): (IndexedSeqView[A], B)
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toArrowAssoc[IndexedSeqView[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  8. final def :+[B >: A](elem: B): View[B]

    Alias for appended

    Alias for appended

    Note that :-ending operators are right associative (see example). A mnemonic for +: vs. :+ is: the COLon goes on the COLlection side.

    Definition Classes
    SeqOps
    Annotations
    @inline()
  9. final def :++[B >: A](suffix: IterableOnce[B]): View[B]

    Alias for appendedAll

    Alias for appendedAll

    Definition Classes
    SeqOps
    Annotations
    @inline()
  10. 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
  11. final def addString(b: mutable.StringBuilder): mutable.StringBuilder

    Appends all elements of this view to a string builder.

    Appends all elements of this view to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this view 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.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  12. final def addString(b: mutable.StringBuilder, sep: String): mutable.StringBuilder

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

    Appends all elements of this view 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 view, 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.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  13. def addString(b: mutable.StringBuilder, start: String, sep: String, end: String): mutable.StringBuilder

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

    Appends all elements of this view 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 view 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.

    Definition Classes
    IterableOnceOps
  14. def appended[B >: A](elem: B): IndexedSeqView[B]

    A copy of this view with an element appended.

    A copy of this view with an element appended.

    Note: will not terminate for infinite-sized collections.

    Example:

    scala> val a = List(1)
    a: List[Int] = List(1)
    
    scala> val b = a :+ 2
    b: List[Int] = List(1, 2)
    
    scala> println(a)
    List(1)
    B

    the element type of the returned view.

    elem

    the appended element

    returns

    a new view consisting of all elements of this view followed by value.

    Definition Classes
    IndexedSeqViewSeqViewSeqOps
  15. def appendedAll[B >: A](suffix: SomeIndexedSeqOps[B]): IndexedSeqView[B]
  16. def appendedAll[B >: A](suffix: SomeSeqOps[B]): SeqView[B]
    Definition Classes
    SeqView
  17. def appendedAll[B >: A](suffix: IterableOnce[B]): View[B]

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

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

    B

    the element type of the returned collection.

    suffix

    the iterable to append.

    returns

    a new collection of type CC[B] which contains all elements of this view followed by all elements of suffix.

    Definition Classes
    SeqOps
  18. 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.

  19. def className: String

    Defines the prefix of this object's toString representation.

    Defines the prefix of this object's toString representation.

    It is recommended to return the name of the concrete collection type, but not implementation subclasses. For example, for ListMap this method should return "ListMap", not "Map" (the supertype) or "Node" (an implementation subclass).

    The default implementation returns "Iterable". It is overridden for the basic collection kinds "Seq", "IndexedSeq", "LinearSeq", "Buffer", "Set", "Map", "SortedSet", "SortedMap" and "View".

    returns

    a string representation which starts the result of toString applied to this view. By default the string prefix is the simple name of the collection class view.

    Attributes
    protected[this]
    Definition Classes
    Iterable
  20. 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

  21. final def coll: IndexedSeqView.this.type

    returns

    This collection as a C.

    Attributes
    protected
    Definition Classes
    IterableIterableOps
  22. def collect[B](pf: PartialFunction[A, B]): View[B]

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

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

    B

    the element type of the returned view.

    pf

    the partial function which filters and maps the view.

    returns

    a new view 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.

    Definition Classes
    IterableOpsIterableOnceOps
  23. def collectFirst[B](pf: PartialFunction[A, B]): Option[B]

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

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

    Note: may not terminate for infinite-sized collections.

    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.

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

  24. def combinations(n: Int): Iterator[View[A]]

    Iterates over combinations.

    Iterates over combinations. A _combination_ of length n is a subsequence of the original sequence, with the elements taken in order. Thus, "xy" and "yy" are both length-2 combinations of "xyy", but "yx" is not. If there is more than one way to generate the same subsequence, only one will be returned.

    For example, "xyyy" has three different ways to generate "xy" depending on whether the first, second, or third "y" is selected. However, since all are identical, only one will be chosen. Which of the three will be taken is an implementation detail that is not defined.

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

    returns

    An Iterator which traverses the possible n-element combinations of this view.

    Definition Classes
    SeqOps
    Example:
    1. "abbbc".combinations(2) = Iterator(ab, ac, bb, bc)

  25. def concat[B >: A](suffix: SomeIndexedSeqOps[B]): IndexedSeqView[B]
  26. def concat[B >: A](suffix: SomeSeqOps[B]): SeqView[B]
    Definition Classes
    SeqView
  27. final def concat[B >: A](suffix: IterableOnce[B]): View[B]

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

    Returns a new view containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the view 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 view which contains all elements of this view followed by all elements of suffix.

    Definition Classes
    SeqOpsIterableOps
    Annotations
    @inline()
  28. def contains[A1 >: A](elem: A1): Boolean

    Tests whether this view contains a given value as an element.

    Tests whether this view contains a given value as an element.

    Note: may not terminate for infinite-sized collections.

    elem

    the element to test.

    returns

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

    Definition Classes
    SeqOps
  29. def containsSlice[B >: A](that: Seq[B]): Boolean

    Tests whether this view contains a given sequence as a slice.

    Tests whether this view contains a given sequence as a slice.

    Note: may not terminate for infinite-sized collections.

    that

    the sequence to test

    returns

    true if this view contains a slice with the same elements as that, otherwise false.

    Definition Classes
    SeqOps
  30. 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 view.

    Copying will stop once either all the elements of this view 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

    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.

  31. 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 view.

    Copying will stop once either all the elements of this view 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

    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.

  32. 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 view.

    Copying will stop once either all the elements of this view 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

    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.

  33. def corresponds[B](that: Seq[B])(p: (A, B) => Boolean): Boolean

    Tests whether every element of this view relates to the corresponding element of another sequence by satisfying a test predicate.

    Tests whether every element of this view relates to the corresponding element of another sequence by satisfying a test predicate.

    B

    the type of the elements of that

    that

    the other sequence

    p

    the test predicate, which relates elements from both sequences

    returns

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

    Definition Classes
    SeqOps
  34. def corresponds[B](that: 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

    Definition Classes
    IterableOnceOps
  35. def count(p: (A) => Boolean): Int

    Counts the number of elements in the view which satisfy a predicate.

    Counts the number of elements in the view 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.

    Definition Classes
    IterableOnceOps
  36. def diff[B >: A](that: Seq[B]): View[A]

    Computes the multiset difference between this view and another sequence.

    Computes the multiset difference between this view and another sequence.

    that

    the sequence of elements to remove

    returns

    a new view which contains all elements of this view except some of occurrences of elements that also appear in that. If an element value x appears n times in that, then the first n occurrences of x will not form part of the result, but any following occurrences will.

    Definition Classes
    SeqOps
  37. def distinct: View[A]

    Selects all the elements of this view ignoring the duplicates.

    Selects all the elements of this view ignoring the duplicates.

    returns

    a new view consisting of all the elements of this view without duplicates.

    Definition Classes
    SeqOps
  38. def distinctBy[B](f: (A) => B): View[A]

    Selects all the elements of this view ignoring the duplicates as determined by == after applying the transforming function f.

    Selects all the elements of this view ignoring the duplicates as determined by == after applying the transforming function f.

    B

    the type of the elements after being transformed by f

    f

    The transforming function whose result is used to determine the uniqueness of each element

    returns

    a new view consisting of all the elements of this view without duplicates.

    Definition Classes
    SeqOps
  39. def drop(n: Int): IndexedSeqView[A]

    Selects all elements except first n ones.

    Selects all elements except first n ones.

    n

    the number of elements to drop from this view.

    returns

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

    Definition Classes
    IndexedSeqViewSeqViewIndexedSeqOpsIterableOpsIterableOnceOps
  40. def dropRight(n: Int): IndexedSeqView[A]

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    n

    the number of elements to drop from this view.

    returns

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

    Definition Classes
    IndexedSeqViewSeqViewIndexedSeqOpsIterableOps
  41. def dropWhile(p: (A) => Boolean): View[A]

    Drops longest prefix of elements that satisfy a predicate.

    Drops longest prefix of elements that satisfy a predicate.

    p

    The predicate used to test elements.

    returns

    the longest suffix of this view whose first element does not satisfy the predicate p.

    Definition Classes
    IterableOpsIterableOnceOps
  42. def empty: View[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.

    Definition Classes
    ViewIterableFactoryDefaultsIterableOps
  43. def endsWith[B >: A](that: Iterable[B]): Boolean

    Tests whether this view ends with the given sequence.

    Tests whether this view ends with the given sequence.

    Note: will not terminate for infinite-sized collections.

    that

    the sequence to test

    returns

    true if this view has that as a suffix, false otherwise.

    Definition Classes
    SeqOps
  44. def ensuring(cond: (IndexedSeqView[A]) => Boolean, msg: => Any): IndexedSeqView[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toEnsuring[IndexedSeqView[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  45. def ensuring(cond: (IndexedSeqView[A]) => Boolean): IndexedSeqView[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toEnsuring[IndexedSeqView[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  46. def ensuring(cond: Boolean, msg: => Any): IndexedSeqView[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toEnsuring[IndexedSeqView[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  47. def ensuring(cond: Boolean): IndexedSeqView[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toEnsuring[IndexedSeqView[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  48. 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
  49. def equals(arg0: AnyRef): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to eq.

    See also equals in scala.Any.

    returns

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

    Definition Classes
    AnyRef → Any
  50. def exists(p: (A) => Boolean): Boolean

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

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

    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 view, otherwise false

    Definition Classes
    IterableOnceOps
  51. def filter(pred: (A) => Boolean): View[A]

    Selects all elements of this view which satisfy a predicate.

    Selects all elements of this view which satisfy a predicate.

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  52. def filterNot(pred: (A) => Boolean): View[A]

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

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

    pred

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  53. 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

  54. def find(p: (A) => Boolean): Option[A]

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

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

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableOnceOps
  55. def findLast(p: (A) => Boolean): Option[A]

    Finds the last element of the view satisfying a predicate, if any.

    Finds the last element of the view satisfying a predicate, if any.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    an option value containing the last element in the view that satisfies p, or None if none exists.

    Definition Classes
    SeqOps
  56. def flatMap[B](f: (A) => IterableOnce[B]): View[B]

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

    Builds a new view by applying a function to all elements of this view 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 view. 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 view resulting from applying the given collection-valued function f to each element of this view and concatenating the results.

    Definition Classes
    IterableOpsIterableOnceOps
  57. def flatten[B](implicit asIterable: (A) => IterableOnce[B]): View[B]

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

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

    The resulting collection's type will be guided by the type of view. 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 view is a GenTraversable.

    returns

    a new view resulting from concatenating all element views.

    Definition Classes
    IterableOpsIterableOnceOps
  58. def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1

    Folds the elements of this view using the specified associative binary operator.

    Folds the elements of this view 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 view is empty.

    Definition Classes
    IterableOnceOps
  59. def foldLeft[B](z: B)(op: (B, A) => B): B

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

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

    Note: will not terminate for infinite-sized collections.

    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 view, 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 view. Returns z if this view is empty.

    Definition Classes
    IterableOnceOps
  60. def foldRight[B](z: B)(op: (A, B) => B): B

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

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

    Note: will not terminate for infinite-sized collections.

    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 view, 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 view. Returns z if this view is empty.

    Definition Classes
    IndexedSeqOpsIterableOnceOps
  61. def forall(p: (A) => Boolean): Boolean

    Tests whether a predicate holds for all elements of this view.

    Tests whether a predicate holds for all elements of this view.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableOnceOps
  62. 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.

    Definition Classes
    IterableOnceOps
  63. def fromSpecific(coll: IterableOnce[A]): View[A]

    Defines how to turn a given Iterable[A] into a collection of type C.

    Defines how to turn a given Iterable[A] into a collection of type C.

    This process can be done in a strict way or a non-strict way (ie. without evaluating the elements of the resulting collections). In other words, this methods defines the evaluation model of the collection.

    Attributes
    protected
    Definition Classes
    IterableFactoryDefaultsIterableOps
    Note

    When implementing a custom collection type and refining C to the new type, this method needs to be overridden (the compiler will issue an error otherwise). In the common case where C =:= CC[A], this can be done by mixing in the scala.collection.IterableFactoryDefaults trait, which implements the method using iterableFactory.

    ,

    As witnessed by the @uncheckedVariance annotation, using this method might be unsound. However, as long as it is called with an Iterable[A] obtained from this collection (as it is the case in the implementations of operations where we use a View[A]), it is safe.

  64. 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()
  65. def groupBy[K](f: (A) => K): immutable.Map[K, View[A]]

    Partitions this view into a map of views according to some discriminator function.

    Partitions this view into a map of views 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 views 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 view of those elements x for which f(x) equals k.

    Definition Classes
    IterableOps
  66. def groupMap[K, B](key: (A) => K)(f: (A) => B): immutable.Map[K, View[B]]

    Partitions this view into a map of views according to a discriminator function key.

    Partitions this view into a map of views 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

    Definition Classes
    IterableOps
  67. def groupMapReduce[K, B](key: (A) => K)(f: (A) => B)(reduce: (B, B) => B): immutable.Map[K, B]

    Partitions this view into a map according to a discriminator function key.

    Partitions this view 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.

    Definition Classes
    IterableOps
  68. def grouped(size: Int): Iterator[View[A]]

    Partitions elements in fixed size views.

    Partitions elements in fixed size views.

    size

    the number of elements per group

    returns

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

    Definition Classes
    IterableOps
    See also

    scala.collection.Iterator, method grouped

  69. def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

    the hash code value for this object.

    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  70. def head: A

    Selects the first element of this view.

    Selects the first element of this view.

    returns

    the first element of this view.

    Definition Classes
    IndexedSeqOpsIterableOps
    Exceptions thrown

    NoSuchElementException if the view is empty.

  71. def headOption: Option[A]

    Optionally selects the first element.

    Optionally selects the first element.

    returns

    the first element of this view if it is nonempty, None if it is empty.

    Definition Classes
    IndexedSeqOpsIterableOps
  72. def indexOf[B >: A](elem: B): Int

    Finds index of first occurrence of some value in this view.

    Finds index of first occurrence of some value in this view.

    B

    the type of the element elem.

    elem

    the element value to search for.

    returns

    the index >= 0 of the first element of this view that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  73. def indexOf[B >: A](elem: B, from: Int): Int

    Finds index of first occurrence of some value in this view after or at some start index.

    Finds index of first occurrence of some value in this view after or at some start index.

    B

    the type of the element elem.

    elem

    the element value to search for.

    from

    the start index

    returns

    the index >= from of the first element of this view that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    SeqOps
  74. def indexOfSlice[B >: A](that: Seq[B]): Int

    Finds first index where this view contains a given sequence as a slice.

    Finds first index where this view contains a given sequence as a slice.

    Note: may not terminate for infinite-sized collections.

    that

    the sequence to test

    returns

    the first index >= 0 such that the elements of this view starting at this index match the elements of sequence that, or -1 of no such subsequence exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  75. def indexOfSlice[B >: A](that: Seq[B], from: Int): Int

    Finds first index after or at a start index where this view contains a given sequence as a slice.

    Finds first index after or at a start index where this view contains a given sequence as a slice.

    Note: may not terminate for infinite-sized collections.

    that

    the sequence to test

    from

    the start index

    returns

    the first index >= from such that the elements of this view starting at this index match the elements of sequence that, or -1 of no such subsequence exists.

    Definition Classes
    SeqOps
  76. def indexWhere(p: (A) => Boolean): Int

    Finds index of the first element satisfying some predicate.

    Finds index of the first element satisfying some predicate.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the index >= 0 of the first element of this view that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  77. def indexWhere(p: (A) => Boolean, from: Int): Int

    Finds index of the first element satisfying some predicate after or at some start index.

    Finds index of the first element satisfying some predicate after or at some start index.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    from

    the start index

    returns

    the index >= from of the first element of this view that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    SeqOps
  78. def indices: immutable.Range

    Produces the range of all indices of this sequence.

    Produces the range of all indices of this sequence.

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

    returns

    a Range value from 0 to one less than the length of this view.

    Definition Classes
    SeqOps
  79. def init: View[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.

    Definition Classes
    IterableOps
  80. def inits: Iterator[View[A]]

    Iterates over the inits of this view.

    Iterates over the inits of this view. The first value will be this view and the final one will be an empty view, 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 view

    Definition Classes
    IterableOps
    Example:
    1. List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)

  81. def intersect[B >: A](that: Seq[B]): View[A]

    Computes the multiset intersection between this view and another sequence.

    Computes the multiset intersection between this view and another sequence.

    that

    the sequence of elements to intersect with.

    returns

    a new view which contains all elements of this view which also appear in that. If an element value x appears n times in that, then the first n occurrences of x will be retained in the result, but any following occurrences will be omitted.

    Definition Classes
    SeqOps
  82. def isDefinedAt(idx: Int): Boolean

    Tests whether this view contains given index.

    Tests whether this view contains given index.

    The implementations of methods apply and isDefinedAt turn a Seq[A] into a PartialFunction[Int, A].

    idx

    the index to test

    returns

    true if this view contains an element at position idx, false otherwise.

    Definition Classes
    SeqOps
  83. def isEmpty: Boolean

    Tests whether the view is empty.

    Tests whether the view 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 view contains no elements, false otherwise.

    Definition Classes
    SeqOpsIterableOnceOps
  84. 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.

  85. def isTraversableAgain: Boolean

    Tests whether this view can be repeatedly traversed.

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

    returns

    true if it is repeatedly traversable, false otherwise.

    Definition Classes
    IterableOpsIterableOnceOps
  86. def iterableFactory: IterableFactory[View]

    The companion object of this view, providing various factory methods.

    The companion object of this view, providing various factory methods.

    Definition Classes
    ViewIterableIterableOps
    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).

  87. def iterator: Iterator[A]

    Iterator can be used only once

    Iterator can be used only once

    Definition Classes
    IndexedSeqViewIndexedSeqOpsIterableOnce
  88. def knownSize: Int

    returns

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

    Definition Classes
    IndexedSeqOpsIterableOnce
  89. def last: A

    Selects the last element.

    Selects the last element.

    returns

    The last element of this view.

    Definition Classes
    IndexedSeqOpsIterableOps
    Exceptions thrown

    NoSuchElementException If the view is empty.

  90. def lastIndexOf[B >: A](elem: B, end: Int = length - 1): Int

    Finds index of last occurrence of some value in this view before or at a given end index.

    Finds index of last occurrence of some value in this view before or at a given end index.

    Note: will not terminate for infinite-sized collections.

    B

    the type of the element elem.

    elem

    the element value to search for.

    end

    the end index.

    returns

    the index <= end of the last element of this view that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    SeqOps
  91. def lastIndexOfSlice[B >: A](that: Seq[B]): Int

    Finds last index where this view contains a given sequence as a slice.

    Finds last index where this view contains a given sequence as a slice.

    Note: will not terminate for infinite-sized collections.

    that

    the sequence to test

    returns

    the last index such that the elements of this view starting at this index match the elements of sequence that, or -1 of no such subsequence exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  92. def lastIndexOfSlice[B >: A](that: Seq[B], end: Int): Int

    Finds last index before or at a given end index where this view contains a given sequence as a slice.

    Finds last index before or at a given end index where this view contains a given sequence as a slice.

    Note: will not terminate for infinite-sized collections.

    that

    the sequence to test

    end

    the end index

    returns

    the last index <= end such that the elements of this view starting at this index match the elements of sequence that, or -1 of no such subsequence exists.

    Definition Classes
    SeqOps
  93. def lastIndexWhere(p: (A) => Boolean): Int

    Finds index of last element satisfying some predicate.

    Finds index of last element satisfying some predicate.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the index of the last element of this view that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  94. def lastIndexWhere(p: (A) => Boolean, end: Int): Int

    Finds index of last element satisfying some predicate before or at given end index.

    Finds index of last element satisfying some predicate before or at given end index.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the index <= end of the last element of this view that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    SeqOps
  95. def lastOption: Option[A]

    Optionally selects the last element.

    Optionally selects the last element.

    returns

    the last element of this view$ if it is nonempty, None if it is empty.

    Definition Classes
    IterableOps
  96. def lazyZip[B](that: Iterable[B]): LazyZip2[A, B, IndexedSeqView.this.type]

    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

    that

    the iterable providing the second element of 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.

    Definition Classes
    Iterable
  97. final def lengthCompare(that: Iterable[_]): Int

    Compares the length of this view to the size of another Iterable.

    Compares the length of this view to the size of another Iterable.

    that

    the Iterable whose size is compared with this view's length.

    returns

    A value x where

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

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

    Definition Classes
    IndexedSeqOpsSeqOps
  98. final def lengthCompare(len: Int): Int

    Compares the length of this view to a test value.

    Compares the length of this view to a test value.

    len

    the test value that gets compared with the length.

    returns

    A value x where

    x <  0       if this.length <  len
    x == 0       if this.length == len
    x >  0       if this.length >  len

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

    Definition Classes
    IndexedSeqOpsSeqOps
    See also

    lengthIs

  99. final def lengthIs: SizeCompareOps

    Returns a value class containing operations for comparing the length of this view to a test value.

    Returns a value class containing operations for comparing the length of this view to a test value.

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

    this.lengthIs < len     // this.lengthCompare(len) < 0
    this.lengthIs <= len    // this.lengthCompare(len) <= 0
    this.lengthIs == len    // this.lengthCompare(len) == 0
    this.lengthIs != len    // this.lengthCompare(len) != 0
    this.lengthIs >= len    // this.lengthCompare(len) >= 0
    this.lengthIs > len     // this.lengthCompare(len) > 0
    Definition Classes
    SeqOps
    Annotations
    @inline()
  100. def map[B](f: (A) => B): IndexedSeqView[B]

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

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

    B

    the element type of the returned view.

    f

    the function to apply to each element.

    returns

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

    Definition Classes
    IndexedSeqViewSeqViewIndexedSeqOpsIterableOpsIterableOnceOps
  101. 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 view with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this view is empty.

  102. 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 view with the largest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this view is empty.

  103. 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 view with the largest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
  104. 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 view with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
  105. 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 view with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this view is empty.

  106. 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 view with the smallest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this view is empty.

  107. 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 view with the smallest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
  108. 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 view with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
  109. final def mkString: String

    Displays all elements of this view in a string.

    Displays all elements of this view in a string.

    Delegates to addString, which can be overridden.

    returns

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

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

    Displays all elements of this view in a string using a separator string.

    Displays all elements of this view in a string using a separator string.

    Delegates to addString, which can be overridden.

    sep

    the separator string.

    returns

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

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
    Example:
    1. List(1, 2, 3).mkString("|") = "1|2|3"

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

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

    Displays all elements of this view 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 view. 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 view are separated by the string sep.

    Definition Classes
    IterableOnceOps
    Example:
    1. List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"

  112. 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
  113. def newSpecificBuilder: Builder[A, View[A]]

    returns

    a strict builder for the same collection type. Note that in the case of lazy collections (e.g. scala.collection.View or scala.collection.immutable.LazyList), it is possible to implement this method but the resulting Builder will break laziness. As a consequence, operations should preferably be implemented with fromSpecific instead of this method.

    Attributes
    protected
    Definition Classes
    IterableFactoryDefaultsIterableOps
    Note

    When implementing a custom collection type and refining C to the new type, this method needs to be overridden (the compiler will issue an error otherwise). In the common case where C =:= CC[A], this can be done by mixing in the scala.collection.IterableFactoryDefaults trait, which implements the method using iterableFactory.

    ,

    As witnessed by the @uncheckedVariance annotation, using this method might be unsound. However, as long as the returned builder is only fed with A values taken from this instance, it is safe.

  114. def nonEmpty: Boolean

    Tests whether the view is not empty.

    Tests whether the view is not empty.

    returns

    true if the view contains at least one element, false otherwise.

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
  115. 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

  116. 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

  117. def occCounts[B](sq: Seq[B]): mutable.Map[B, Int]
    Attributes
    protected[collection]
    Definition Classes
    SeqOps
  118. def padTo[B >: A](len: Int, elem: B): View[B]

    A copy of this view with an element value appended until a given target length is reached.

    A copy of this view with an element value appended until a given target length is reached.

    B

    the element type of the returned view.

    len

    the target length

    elem

    the padding value

    returns

    a new view consisting of all elements of this view followed by the minimal number of occurrences of elem so that the resulting collection has a length of at least len.

    Definition Classes
    SeqOps
  119. def partition(p: (A) => Boolean): (View[A], View[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.

    Definition Classes
    IterableOps
  120. def partitionMap[A1, A2](f: (A) => Either[A1, A2]): (View[A1], View[A2])

    Applies a function f to each element of the view and returns a pair of views: 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 view and returns a pair of views: 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 = `View`(1, "one", 2, "two", 3, "three") partitionMap {
     case i: Int => Left(i)
     case s: String => Right(s)
    }
    // xs == (`View`(1, 2, 3),
    //        `View`(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 view to an scala.util.Either

    returns

    a pair of views: 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.

    Definition Classes
    IterableOps
  121. def patch[B >: A](from: Int, other: IterableOnce[B], replaced: Int): View[B]

    Produces a new view where a slice of elements in this view is replaced by another sequence.

    Produces a new view where a slice of elements in this view is replaced by another sequence.

    Patching at negative indices is the same as patching starting at 0. Patching at indices at or larger than the length of the original view appends the patch to the end. If more values are replaced than actually exist, the excess is ignored.

    B

    the element type of the returned view.

    from

    the index of the first replaced element

    other

    the replacement sequence

    replaced

    the number of elements to drop in the original view

    returns

    a new view consisting of all elements of this view except that replaced elements starting from from are replaced by all the elements of other.

    Definition Classes
    SeqOps
  122. def permutations: Iterator[View[A]]

    Iterates over distinct permutations.

    Iterates over distinct permutations.

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

    returns

    An Iterator which traverses the distinct permutations of this view.

    Definition Classes
    SeqOps
    Example:
    1. "abb".permutations = Iterator(abb, bab, bba)

  123. def prepended[B >: A](elem: B): IndexedSeqView[B]

    A copy of the view with an element prepended.

    A copy of the view with an element prepended.

    Also, the original view is not modified, so you will want to capture the result.

    Example:

    scala> val x = List(1)
    x: List[Int] = List(1)
    
    scala> val y = 2 +: x
    y: List[Int] = List(2, 1)
    
    scala> println(x)
    List(1)
    B

    the element type of the returned view.

    elem

    the prepended element

    returns

    a new view consisting of value followed by all elements of this view.

    Definition Classes
    IndexedSeqViewSeqViewIndexedSeqOpsSeqOps
  124. def prependedAll[B >: A](prefix: SomeIndexedSeqOps[B]): IndexedSeqView[B]
  125. def prependedAll[B >: A](prefix: SomeSeqOps[B]): SeqView[B]
    Definition Classes
    SeqView
  126. def prependedAll[B >: A](prefix: IterableOnce[B]): View[B]

    As with :++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    As with :++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    It differs from :++ in that the right operand determines the type of the resulting collection rather than the left one. Mnemonic: the COLon is on the side of the new COLlection type.

    B

    the element type of the returned collection.

    prefix

    the iterable to prepend.

    returns

    a new view which contains all elements of prefix followed by all the elements of this view.

    Definition Classes
    SeqOps
  127. 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 view with respect to the * operator in num.

    Definition Classes
    IterableOnceOps
  128. def reduce[B >: A](op: (B, B) => B): B

    Reduces the elements of this view using the specified associative binary operator.

    Reduces the elements of this view 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 view is nonempty.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this view is empty.

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this view is empty.

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
  131. def reduceOption[B >: A](op: (B, B) => B): Option[B]

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

    Reduces the elements of this view, 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.

    Definition Classes
    IterableOnceOps
  132. def reduceRight[B >: A](op: (A, B) => B): B

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

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

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this view is empty.

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
  134. def reverse: IndexedSeqView[A]

    Returns new view with elements in reversed order.

    Returns new view with elements in reversed order.

    Note: will not terminate for infinite-sized collections.

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

    returns

    A new view with all elements of this view in reversed order.

    Definition Classes
    IndexedSeqViewSeqViewIndexedSeqOpsSeqOps
  135. def reverseIterator: Iterator[A]

    An iterator yielding elements in reversed order.

    An iterator yielding elements in reversed order.

    Note: will not terminate for infinite-sized collections.

    Note: xs.reverseIterator is the same as xs.reverse.iterator but might be more efficient.

    returns

    an iterator yielding the elements of this view in reversed order

    Definition Classes
    IndexedSeqViewIndexedSeqOpsSeqOps
  136. def reversed: Iterable[A]
    Attributes
    protected
    Definition Classes
    IndexedSeqOpsIterableOnceOps
  137. def sameElements[B >: A](that: IterableOnce[B]): Boolean

    Are the elements of this collection the same (and in the same order) as those of that?

    Are the elements of this collection the same (and in the same order) as those of that?

    Definition Classes
    SeqOps
  138. def scan[B >: A](z: B)(op: (B, B) => B): View[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 view containing the prefix scan of the elements in this view

    Definition Classes
    IterableOps
  139. def scanLeft[B](z: B)(op: (B, A) => B): View[B]

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

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

    Note: will not terminate for infinite-sized collections.

    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

    Definition Classes
    IterableOpsIterableOnceOps
  140. def scanRight[B](z: B)(op: (A, B) => B): View[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: 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

    Definition Classes
    IterableOps
  141. def search[B >: A](elem: B, from: Int, to: Int)(implicit ord: math.Ordering[B]): SearchResult

    Search within an interval in this sorted sequence for a specific element.

    Search within an interval in this sorted sequence for a specific element. If this sequence is an IndexedSeq, a binary search is used. Otherwise, a linear search is used.

    The sequence should be sorted with the same Ordering before calling; otherwise, the results are undefined.

    elem

    the element to find.

    from

    the index where the search starts.

    to

    the index following where the search ends.

    ord

    the ordering to be used to compare elements.

    returns

    a Found value containing the index corresponding to the element in the sequence, or the InsertionPoint where the element would be inserted if the element is not in the sequence.

    Definition Classes
    IndexedSeqOpsSeqOps
    Note

    if to <= from, the search space is empty, and an InsertionPoint at from is returned

    See also

    scala.collection.IndexedSeq

    scala.math.Ordering

    scala.collection.SeqOps, method sorted

  142. def search[B >: A](elem: B)(implicit ord: math.Ordering[B]): SearchResult

    Search this sorted sequence for a specific element.

    Search this sorted sequence for a specific element. If the sequence is an IndexedSeq, a binary search is used. Otherwise, a linear search is used.

    The sequence should be sorted with the same Ordering before calling; otherwise, the results are undefined.

    elem

    the element to find.

    ord

    the ordering to be used to compare elements.

    returns

    a Found value containing the index corresponding to the element in the sequence, or the InsertionPoint where the element would be inserted if the element is not in the sequence.

    Definition Classes
    IndexedSeqOpsSeqOps
    See also

    scala.collection.IndexedSeq

    scala.math.Ordering

    scala.collection.SeqOps, method sorted

  143. def segmentLength(p: (A) => Boolean, from: Int): Int

    Computes the length of the longest segment that starts from some index and whose elements all satisfy some predicate.

    Computes the length of the longest segment that starts from some index and whose elements all satisfy some predicate.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    from

    the index where the search starts.

    returns

    the length of the longest segment of this view starting from index from such that every element of the segment satisfies the predicate p.

    Definition Classes
    SeqOps
  144. final def segmentLength(p: (A) => Boolean): Int

    Computes the length of the longest segment that starts from the first element and whose elements all satisfy some predicate.

    Computes the length of the longest segment that starts from the first element and whose elements all satisfy some predicate.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the length of the longest segment of this view that starts from the first element such that every element of the segment satisfies the predicate p.

    Definition Classes
    SeqOps
  145. final def size: Int

    The size of this view.

    The size of this view.

    Note: will not terminate for infinite-sized collections.

    returns

    the number of elements in this view.

    Definition Classes
    SeqOpsIterableOnceOps
  146. final def sizeCompare(that: Iterable[_]): Int

    Compares the size of this view to the size of another Iterable.

    Compares the size of this view to the size of another Iterable.

    that

    the Iterable whose size is compared with this view'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.

    Definition Classes
    SeqOpsIterableOps
  147. final def sizeCompare(otherSize: Int): Int

    Compares the size of this view to a test value.

    Compares the size of this view 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.

    Definition Classes
    SeqOpsIterableOps
    See also

    sizeIs

  148. final def sizeIs: SizeCompareOps

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

    Returns a value class containing operations for comparing the size of this view 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
    Definition Classes
    IterableOps
    Annotations
    @inline()
  149. def slice(from: Int, until: Int): IndexedSeqView[A]

    Selects an interval of elements.

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

    from <= indexOf(x) < until
    from

    the lowest index to include from this view.

    until

    the lowest index to EXCLUDE from this view.

    returns

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

    Definition Classes
    IndexedSeqViewIndexedSeqOpsIterableOpsIterableOnceOps
  150. def sliding(size: Int, step: Int): Iterator[View[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 views 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.

    Definition Classes
    IterableOps
    Examples:
    1. List(1, 2, 3, 4, 5).sliding(2, 2) = Iterator(List(1, 2), List(3, 4), List(5))

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

    See also

    scala.collection.Iterator, method sliding

  151. def sliding(size: Int): Iterator[View[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 views 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.

    Definition Classes
    IterableOps
    Examples:
    1. List().sliding(2) = empty iterator

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

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

    6. ,
    7. List(1, 2, 3).sliding(2) = Iterator(List(1, 2), List(2, 3))

    See also

    scala.collection.Iterator, method sliding

  152. def sortBy[B](f: (A) => B)(implicit ord: Ordering[B]): View[A]

    Sorts this view according to the Ordering which results from transforming an implicitly given Ordering with a transformation function.

    Sorts this view according to the Ordering which results from transforming an implicitly given Ordering with a transformation function.

    Note: will not terminate for infinite-sized collections.

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

    The sort is stable. That is, elements that are equal (as determined by ord.compare) appear in the same order in the sorted sequence as in the original.

    B

    the target type of the transformation f, and the type where the ordering ord is defined.

    f

    the transformation function mapping elements to some other domain B.

    ord

    the ordering assumed on domain B.

    returns

    a view consisting of the elements of this view sorted according to the ordering where x < y if ord.lt(f(x), f(y)).

    Definition Classes
    SeqOps
    Example:
    1. val words = "The quick brown fox jumped over the lazy dog".split(' ')
      // this works because scala.Ordering will implicitly provide an Ordering[Tuple2[Int, Char]]
      words.sortBy(x => (x.length, x.head))
      res0: Array[String] = Array(The, dog, fox, the, lazy, over, brown, quick, jumped)
    See also

    scala.math.Ordering

  153. def sortWith(lt: (A, A) => Boolean): View[A]

    Sorts this view according to a comparison function.

    Sorts this view according to a comparison function.

    Note: will not terminate for infinite-sized collections.

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

    The sort is stable. That is, elements that are equal (as determined by lt) appear in the same order in the sorted sequence as in the original.

    lt

    the comparison function which tests whether its first argument precedes its second argument in the desired ordering.

    returns

    a view consisting of the elements of this view sorted according to the comparison function lt.

    Definition Classes
    SeqOps
    Example:
    1. List("Steve", "Tom", "John", "Bob").sortWith(_.compareTo(_) < 0) =
      List("Bob", "John", "Steve", "Tom")
  154. def sorted[B >: A](implicit ord: Ordering[B]): SeqView[A]

    Sorts this view according to an Ordering.

    Sorts this view according to an Ordering.

    The sort is stable. That is, elements that are equal (as determined by ord.compare) appear in the same order in the sorted sequence as in the original.

    ord

    the ordering to be used to compare elements.

    returns

    a view consisting of the elements of this view sorted according to the ordering ord.

    Definition Classes
    SeqViewSeqOps
    See also

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

  155. def span(p: (A) => Boolean): (View[A], View[A])

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

    Splits this view 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.

    p

    the test predicate

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  156. def splitAt(n: Int): (View[A], View[A])

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

    Splits this view 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).

    n

    the position at which to split.

    returns

    a pair of views consisting of the first n elements of this view, and the other elements.

    Definition Classes
    IterableOpsIterableOnceOps
  157. def startsWith[B >: A](that: IterableOnce[B], offset: Int = 0): Boolean

    Tests whether this view contains the given sequence at a given index.

    Tests whether this view contains the given sequence at a given index.

    Note: If the both the receiver object this and the argument that are infinite sequences this method may not terminate.

    that

    the sequence to test

    offset

    the index where the sequence is searched.

    returns

    true if the sequence that is contained in this view at index offset, otherwise false.

    Definition Classes
    SeqOps
  158. def stepper[S <: Stepper[_]](implicit shape: StepperShape[A, S]): S with EfficientSplit

    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.

    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
    IndexedSeqOpsIterableOnce
  159. def stringPrefix: String
    Attributes
    protected[this]
    Definition Classes
    IndexedSeqViewSeqViewViewIterable
    Annotations
    @nowarn()
  160. 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 view with respect to the + operator in num.

    Definition Classes
    IterableOnceOps
  161. 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
  162. def tail: View[A]

    The rest of the collection without its first element.

    The rest of the collection without its first element.

    Definition Classes
    IterableOps
  163. def tails: Iterator[View[A]]

    Iterates over the tails of this view.

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

    returns

    an iterator over all the tails of this view

    Definition Classes
    IterableOps
    Example:
    1. List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)

  164. def take(n: Int): IndexedSeqView[A]

    Selects the first n elements.

    Selects the first n elements.

    n

    the number of elements to take from this view.

    returns

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

    Definition Classes
    IndexedSeqViewSeqViewIndexedSeqOpsIterableOpsIterableOnceOps
  165. def takeRight(n: Int): IndexedSeqView[A]

    Selects the last n elements.

    Selects the last n elements.

    n

    the number of elements to take from this view.

    returns

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

    Definition Classes
    IndexedSeqViewSeqViewIndexedSeqOpsIterableOps
  166. def takeWhile(p: (A) => Boolean): View[A]

    Takes longest prefix of elements that satisfy a predicate.

    Takes longest prefix of elements that satisfy a predicate.

    p

    The predicate used to test elements.

    returns

    the longest prefix of this view whose elements all satisfy the predicate p.

    Definition Classes
    IterableOpsIterableOnceOps
  167. def tapEach[U](f: (A) => U): IndexedSeqView[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 view

    returns

    The same logical collection as this

    Definition Classes
    IndexedSeqViewSeqViewIterableOpsIterableOnceOps
  168. 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]

    Definition Classes
    IterableOnceOps
  169. 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.

    Definition Classes
    IterableOnceOps
  170. final def toBuffer[B >: A]: Buffer[B]
    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  171. def toIndexedSeq: immutable.IndexedSeq[A]
    Definition Classes
    IterableOnceOps
  172. def toList: immutable.List[A]
    Definition Classes
    IterableOnceOps
  173. def toMap[K, V](implicit ev: <:<[A, (K, V)]): immutable.Map[K, V]
    Definition Classes
    IterableOnceOps
  174. def toSeq: immutable.Seq[A]

    returns

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

    Definition Classes
    IterableOnceOps
  175. def toSet[B >: A]: immutable.Set[B]
    Definition Classes
    IterableOnceOps
  176. def toString(): String

    Converts this view to a string.

    Converts this view to a string.

    returns

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

    Definition Classes
    ViewIterable → AnyRef → Any
  177. def toVector: immutable.Vector[A]
    Definition Classes
    IterableOnceOps
  178. def transpose[B](implicit asIterable: (A) => Iterable[B]): View[View[B]]

    Transposes this view of iterable collections into a view of views.

    Transposes this view of iterable collections into a view of views.

    The resulting collection's type will be guided by the static type of view. 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 view is an Iterable.

    returns

    a two-dimensional view of views which has as nth row the nth column of this view.

    Definition Classes
    IterableOps
    Exceptions thrown

    IllegalArgumentException if all collections in this view are not of the same size.

  179. def unzip[A1, A2](implicit asPair: (A) => (A1, A2)): (View[A1], View[A2])

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

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

    val xs = `View`(
               (1, "one"),
               (2, "two"),
               (3, "three")).unzip
    // xs == (`View`(1, 2, 3),
    //        `View`(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 view is a pair.

    returns

    a pair of views, containing the first, respectively second half of each element pair of this view.

    Definition Classes
    IterableOps
  180. def unzip3[A1, A2, A3](implicit asTriple: (A) => (A1, A2, A3)): (View[A1], View[A2], View[A3])

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

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

    val xs = `View`(
               (1, "one", '1'),
               (2, "two", '2'),
               (3, "three", '3')).unzip3
    // xs == (`View`(1, 2, 3),
    //        `View`(one, two, three),
    //        `View`(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 view is a triple.

    returns

    a triple of views, containing the first, second, respectively third member of each element triple of this view.

    Definition Classes
    IterableOps
  181. def updated[B >: A](index: Int, elem: B): View[B]

    A copy of this view with one single replaced element.

    A copy of this view with one single replaced element.

    B

    the element type of the returned view.

    index

    the position of the replacement

    elem

    the replacing element

    returns

    a new view which is a copy of this view with the element at position index replaced by elem.

    Definition Classes
    SeqOps
    Exceptions thrown

    IndexOutOfBoundsException if index does not satisfy 0 <= index < length. In case of a lazy collection this exception may be thrown at a later time or not at all (if the end of the collection is never evaluated).

  182. def view: IndexedSeqView[A]

    A view over the elements of this collection.

    A view over the elements of this collection.

    Definition Classes
    IndexedSeqViewSeqViewViewIndexedSeqOpsSeqOpsIterableOps
  183. final def wait(): Unit

    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

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

    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

  185. final def wait(arg0: Long): Unit

    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

  186. def withFilter(p: (A) => Boolean): WithFilter[A, [_]View[_]]

    Creates a non-strict filter of this view.

    Creates a non-strict filter of this view.

    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.

    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 view which satisfy the predicate p.

    Definition Classes
    IterableOps
  187. def zip[B](that: IterableOnce[B]): View[(A, B)]

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

    Returns a view formed from this view 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 view containing pairs consisting of corresponding elements of this view and that. The length of the returned collection is the minimum of the lengths of this view and that.

    Definition Classes
    IterableOps
  188. def zipAll[A1 >: A, B](that: Iterable[B], thisElem: A1, thatElem: B): View[(A1, B)]

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

    Returns a view formed from this view 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 view is shorter than that.

    thatElem

    the element to be used to fill up the result if that is shorter than this view.

    returns

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

    Definition Classes
    IterableOps
  189. def zipWithIndex: View[(A, Int)]

    Zips this view with its indices.

    Zips this view with its indices.

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
    Example:
    1. List("a", "b", "c").zipWithIndex == List(("a", 0), ("b", 1), ("c", 2))

Deprecated Value Members

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

    (Since version 2.13.0) Use .iterator.foldLeft instead

  2. final def /:[B](z: B)(op: (B, A) => B): B
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use foldLeft instead of /:

  3. def :\[B](z: B)(op: (A, B) => B): B
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    Annotations
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    Deprecated

    (Since version 2.13.0) Use .iterator.foldRight instead

  4. final def :\[B](z: B)(op: (A, B) => B): B
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use foldRight instead of :\

  5. def aggregate[B](z: => B)(seqop: (B, A) => B, combop: (B, B) => B): B
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated
    Deprecated

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

  6. def collectFirst[B](f: PartialFunction[A, B]): Option[B]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[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.collectFirst(...) instead

  7. def companion: IterableFactory[[_]View[_]]
    Definition Classes
    IterableOps
    Annotations
    @deprecated @deprecatedOverriding() @inline()
    Deprecated

    (Since version 2.13.0) Use iterableFactory instead

  8. def copyToBuffer(dest: Buffer[A]): Unit
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[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.copyToBuffer(...) instead

  9. final def copyToBuffer[B >: A](dest: Buffer[B]): Unit
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

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

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

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

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

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

  12. def filter(f: (A) => Boolean): Iterator[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    Definition Classes
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    Annotations
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    Deprecated

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

  13. def find(p: (A) => Boolean): Option[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[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.find instead

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

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

  15. def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[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.fold instead

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

    (Since version 2.13.0) Use .iterator.foldLeft instead

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

    (Since version 2.13.0) Use .iterator.foldRight instead

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

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

  19. def force: IndexedSeq[A]
    Definition Classes
    View
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Views no longer know about their underlying collection type; .force always returns an IndexedSeq

  20. def foreach[U](f: (A) => U): Unit
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    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 IndexedSeqView[A] toStringFormat[IndexedSeqView[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 view is known to have a finite size.

    Tests whether this view 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.

    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 IndexedSeqView[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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    Definition Classes
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    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.isEmpty instead

  24. def map[B](f: (A) => B): IterableOnce[B]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[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 IndexedSeqView[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.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 IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    (indexedSeqView: IterableOnceExtensionMethods[A]).maxBy(f)(cmp)
    Definition Classes
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    (Since version 2.13.0) Use .iterator.maxBy(...) instead

  27. def min(implicit ord: math.Ordering[A]): A
    Implicit
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    (Since version 2.13.0) Use .iterator.min instead

  28. def minBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A
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    (Since version 2.13.0) Use .iterator.minBy(...) instead

  29. def mkString: String
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  30. def mkString(sep: String): String
    Implicit
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  31. def mkString(start: String, sep: String, end: String): String
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  32. def nonEmpty: Boolean
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  33. final def prefixLength(p: (A) => Boolean): Int

    Returns the length of the longest prefix whose elements all satisfy some predicate.

    Returns the length of the longest prefix whose elements all satisfy some predicate.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the length of the longest prefix of this view such that every element of the segment satisfies the predicate p.

    Definition Classes
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    Annotations
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    Deprecated

    (Since version 2.13.0) Use segmentLength instead of prefixLength

  34. def product(implicit num: math.Numeric[A]): A
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  35. def reduce(f: (A, A) => A): A
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  36. def reduceLeft(f: (A, A) => A): A
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  37. def reduceLeftOption(f: (A, A) => A): Option[A]
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  38. def reduceOption(f: (A, A) => A): Option[A]
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  39. def reduceRight(f: (A, A) => A): A
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  40. def reduceRightOption(f: (A, A) => A): Option[A]
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  41. final def repr: View[A]
    Definition Classes
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    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

  42. def reverseMap[B](f: (A) => B): View[B]
    Definition Classes
    SeqOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .reverseIterator.map(f).to(...) instead of .reverseMap(f)

  43. def sameElements[B >: A](that: IterableOnce[B]): Boolean
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    (Since version 2.13.0) Use .iterator.sameElements instead

  44. def seq: IndexedSeqView.this.type
    Definition Classes
    Iterable
    Annotations
    @deprecated
    Deprecated

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

  45. def size: Int
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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  46. def sum(implicit num: math.Numeric[A]): A
    Implicit
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    (Since version 2.13.0) Use .iterator.sum instead

  47. def to[C1](factory: Factory[A, C1]): C1
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    (Since version 2.13.0) Use .iterator.to(factory) instead

  48. def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]
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    (Since version 2.13.0) Use .iterator.toArray

  49. def toBuffer[B >: A]: Buffer[B]
    Implicit
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    (Since version 2.13.0) Use .iterator.to(ArrayBuffer) instead

  50. def toIndexedSeq: IndexedSeq[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    (Since version 2.13.0) Use .iterator.toIndexedSeq instead

  51. final def toIterable: Iterable[A]
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    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    (Since version 2.13.0) Use .iterator.to(Iterable) instead

  52. final def toIterable: IndexedSeqView.this.type

    returns

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

    Definition Classes
    IterableIterableOps
    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

  53. def toIterator: Iterator[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    (Since version 2.13.0) Use .iterator instead

  54. final def toIterator: Iterator[A]
    Definition Classes
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    Annotations
    @deprecated @inline()
    Deprecated

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

  55. def toList: immutable.List[A]
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    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    (Since version 2.13.0) Use .iterator.to(List) instead

  56. def toMap[K, V](implicit ev: <:<[A, (K, V)]): immutable.Map[K, V]
    Implicit
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    (Since version 2.13.0) Use .iterator.to(Map) instead

  57. def toSeq: immutable.Seq[A]
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    (Since version 2.13.0) Use .iterator.to(Seq) instead

  58. def toSet[B >: A]: immutable.Set[B]
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  59. def toStream: immutable.Stream[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    (Since version 2.13.0) Use .iterator.to(LazyList) instead

  60. final def toStream: immutable.Stream[A]
    Definition Classes
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    Annotations
    @deprecated @inline()
    Deprecated

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

  61. final def toTraversable: Traversable[A]
    Implicit
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    (Since version 2.13.0) Use .iterator.to(Iterable) instead

  62. final def toTraversable: Traversable[A]

    Converts this view to an unspecified Iterable.

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

    returns

    An Iterable containing all elements of this view.

    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

  63. def toVector: immutable.Vector[A]
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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    Deprecated

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

  64. final def union[B >: A](that: Seq[B]): View[B]

    Produces a new sequence which contains all elements of this view and also all elements of a given sequence.

    Produces a new sequence which contains all elements of this view and also all elements of a given sequence. xs union ys is equivalent to xs ++ ys.

    B

    the element type of the returned view.

    that

    the sequence to add.

    returns

    a new collection which contains all elements of this view followed by all elements of that.

    Definition Classes
    SeqOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use concat instead

  65. def view(from: Int, until: Int): IndexedSeqView[A]

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

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

    Definition Classes
    IndexedSeqViewIndexedSeqOpsIterableOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .view.slice(from, until) instead of .view(from, until)

  66. def withFilter(f: (A) => Boolean): Iterator[A]
    Implicit
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    (Since version 2.13.0) Use .iterator.withFilter(...) instead

  67. def [B](y: B): (IndexedSeqView[A], B)
    Implicit
    This member is added by an implicit conversion from IndexedSeqView[A] toArrowAssoc[IndexedSeqView[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 SeqView[A]

Inherited from View[A]

Inherited from java.io.Serializable

Inherited from Iterable[A]

Inherited from IterableFactoryDefaults[A, [x]View[x]]

Inherited from IndexedSeqOps[A, View, View[A]]

Inherited from SeqOps[A, View, View[A]]

Inherited from IterableOps[A, [_]View[_], View[A]]

Inherited from IterableOnceOps[A, [_]View[_], View[A]]

Inherited from IterableOnce[A]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion iterableOnceExtensionMethods fromIndexedSeqView[A] to IterableOnceExtensionMethods[A]

Inherited by implicit conversion any2stringadd fromIndexedSeqView[A] to any2stringadd[IndexedSeqView[A]]

Inherited by implicit conversion StringFormat fromIndexedSeqView[A] to StringFormat[IndexedSeqView[A]]

Inherited by implicit conversion Ensuring fromIndexedSeqView[A] to Ensuring[IndexedSeqView[A]]

Inherited by implicit conversion ArrowAssoc fromIndexedSeqView[A] to ArrowAssoc[IndexedSeqView[A]]

Ungrouped