# SortedMap

trait SortedMap[K, +V] extends Map[K, V] with SortedMapOps[K, V, SortedMap, SortedMap[K, V]] with SortedMapFactoryDefaults[K, V, SortedMap, Iterable, Map]

A Map whose keys are sorted according to a scala.math.Ordering

Companion:
object
Source:
SortedMap.scala
trait SortedMapOps[K, V, SortedMap, SortedMap[K, V]]
trait SortedOps[K, SortedMap[K, V]]
trait Map[K, V]
trait Equals
trait MapOps[K, V, Map, SortedMap[K, V]]
trait PartialFunction[K, V]
trait K => V
trait Iterable[(K, V)]
trait IterableOps[(K, V), Iterable, SortedMap[K, V]]
trait IterableOnceOps[(K, V), Iterable, SortedMap[K, V]]
trait IterableOnce[(K, V)]
class Object
trait Matchable
class Any
trait SortedMap[K, V]
class WithDefault[K, V]
class TreeMap[K, V]
trait SortedMap[K, V]
class WithDefault[K, V]
class TreeMap[K, V]

## Value members

### Concrete methods

override def equals(that: Any): Boolean

Equality of maps is implemented using the lookup method get.

Equality of maps is implemented using the lookup method get. This method returns `true` if

• the argument `o` is a `Map`,

• the two maps have the same size, and

• for every `(key, value)` pair in this map, `other.get(key) == Some(value)`.

The implementation of `equals` checks the canEqual method, so subclasses of `Map` can narrow down the equality to specific map types. The `Map` implementations in the standard library can all be compared, their `canEqual` methods return `true`.

Note: The `equals` method only respects the equality laws (symmetry, transitivity) if the two maps use the same key equivalence function in their lookup operation. For example, the key equivalence operation in a scala.collection.immutable.TreeMap is defined by its ordering. Comparing a `TreeMap` with a `HashMap` leads to unexpected results if `ordering.equiv(k1, k2)` (used for lookup in `TreeMap`) is different from `k1 == k2` (used for lookup in `HashMap`).

``````scala> import scala.collection.immutable._
scala> val ord: Ordering[String] = _ compareToIgnoreCase _

scala> TreeMap("A" -> 1)(ord) == HashMap("a" -> 1)
val res0: Boolean = false

scala> HashMap("a" -> 1) == TreeMap("A" -> 1)(ord)
val res1: Boolean = true``````
Value parameters:
o

The map to which this map is compared

Returns:

`true` if the two maps are equal according to the description

Definition Classes
Map -> Equals -> Any
Source:
SortedMap.scala

The companion object of this sorted map, providing various factory methods.

The companion object of this sorted map, providing various factory methods.

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).

Source:
SortedMap.scala
def unsorted: Map[K, V]

### Inherited methods

final override def ++[V2 >: V](xs: IterableOnce[(K, V2)]): CC[K, V2]

Alias for `concat`

Alias for `concat`

Definition Classes
Inherited from:
SortedMapOps
Source:
SortedMap.scala
final def ++[B >: (K, V)](suffix: IterableOnce[B]): CC[B]

Alias for `concat`

Alias for `concat`

Inherited from:
IterableOps
Source:
Iterable.scala
override def addString(sb: StringBuilder, start: String, sep: String, end: String): StringBuilder

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

Appends all elements of this map 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 map 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)``````
Value parameters:
b

the string builder to which elements are appended.

end

the ending string.

sep

the separator string.

start

the starting string.

Returns:

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

Definition Classes
Inherited from:
MapOps
Source:
Map.scala

Appends all elements of this collection to a string builder.

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

Example:

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

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

h: StringBuilder = 1234``````
Value parameters:
b

the string builder to which elements are appended.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala

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

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

Example:

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

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

res0: StringBuilder = 1, 2, 3, 4``````
Value parameters:
b

the string builder to which elements are appended.

sep

the separator string.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def andThen[C](k: PartialFunction[V, C]): PartialFunction[A, C]

Composes this partial function with another partial function that gets applied to results of this partial function.

Composes this partial function with another partial function that gets applied to results of this partial function.

Note that calling isDefinedAt on the resulting partial function may apply the first partial function and execute its side effect. For efficiency, it is recommended to call applyOrElse instead of isDefinedAt or apply.

Type parameters:
C

the result type of the transformation function.

Value parameters:
k

the transformation function

Returns:

a partial function with the domain of this partial function narrowed by other partial function, which maps arguments `x` to `k(this(x))`.

Inherited from:
PartialFunction
Source:
PartialFunction.scala
override def andThen[C](k: V => C): PartialFunction[A, C]

Composes this partial function with a transformation function that gets applied to results of this partial function.

Composes this partial function with a transformation function that gets applied to results of this partial function.

If the runtime type of the function is a `PartialFunction` then the other `andThen` method is used (note its cautions).

Type parameters:
C

the result type of the transformation function.

Value parameters:
k

the transformation function

Returns:

a partial function with the domain of this partial function, possibly narrowed by the specified function, which maps arguments `x` to `k(this(x))`.

Definition Classes
Inherited from:
PartialFunction
Source:
PartialFunction.scala
def apply(key: K): V

Retrieves the value which is associated with the given key.

Retrieves the value which is associated with the given key. This method invokes the `default` method of the map if there is no mapping from the given key to a value. Unless overridden, the `default` method throws a `NoSuchElementException`.

Value parameters:
key

the key

Returns:

the value associated with the given key, or the result of the map's `default` method, if none exists.

Inherited from:
MapOps
Source:
Map.scala
override def applyOrElse[K1 <: K, V1 >: V](x: K1, default: K1 => V1): V1

Applies this partial function to the given argument when it is contained in the function domain.

Applies this partial function to the given argument when it is contained in the function domain. Applies fallback function where this partial function is not defined.

Note that expression `pf.applyOrElse(x, default)` is equivalent to

``if(pf isDefinedAt x) pf(x) else default(x)``

except that `applyOrElse` method can be implemented more efficiently. For all partial function literals the compiler generates an `applyOrElse` implementation which avoids double evaluation of pattern matchers and guards. This makes `applyOrElse` the basis for the efficient implementation for many operations and scenarios, such as:

- combining partial functions into `orElse`/`andThen` chains does not lead to excessive `apply`/`isDefinedAt` evaluation - `lift` and `unlift` do not evaluate source functions twice on each invocation - `runWith` allows efficient imperative-style combining of partial functions with conditionally applied actions

For non-literal partial function classes with nontrivial `isDefinedAt` method it is recommended to override `applyOrElse` with custom implementation that avoids double `isDefinedAt` evaluation. This may result in better performance and more predictable behavior w.r.t. side effects.

Value parameters:
default

the fallback function

x

the function argument

Returns:

the result of this function or fallback function application.

Definition Classes
Inherited from:
MapOps
Source:
Map.scala
def canEqual(that: Any): Boolean

A method that should be called from every well-designed equals method that is open to be overridden in a subclass.

A method that should be called from every well-designed equals method that is open to be overridden in a subclass. See Programming in Scala, Chapter 28 for discussion and design.

Value parameters:
that

the value being probed for possible equality

Returns:

true if this instance can possibly equal `that`, otherwise false

Inherited from:
Map
Source:
Map.scala
def collect[K2, V2](pf: PartialFunction[(K, V), (K2, V2)]): CC[K2, V2]

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

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

Type parameters:
K2

the key type of the returned map.

V2

the value type of the returned map.

Value parameters:
pf

the partial function which filters and maps the map.

Returns:

a new map 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.

Inherited from:
MapOps
Source:
Map.scala
def collect[B](pf: PartialFunction[(K, V), B]): CC[B]

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

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

Type parameters:
B

the element type of the returned iterable collection.

Value parameters:
pf

the partial function which filters and maps the iterable collection.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def collect[K2, V2](pf: PartialFunction[(K, V), (K2, V2)])(implicit ordering: Ordering[K2]): CC[K2, V2]

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

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

Value parameters:
pf

the partial function which filters and maps the map.

Returns:

a new map 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.

Inherited from:
SortedMapOps
Source:
SortedMap.scala
def collectFirst[B](pf: PartialFunction[(K, V), B]): Option[B]

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

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

Note: may not terminate for infinite-sized collections.

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

Value parameters:
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.

Example:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def compose[R](k: PartialFunction[R, K]): PartialFunction[R, B]

Composes another partial function `k` with this partial function so that this partial function gets applied to results of `k`.

Composes another partial function `k` with this partial function so that this partial function gets applied to results of `k`.

Note that calling isDefinedAt on the resulting partial function may apply the first partial function and execute its side effect. For efficiency, it is recommended to call applyOrElse instead of isDefinedAt or apply.

Type parameters:
R

the parameter type of the transformation function.

Value parameters:
k

the transformation function

Returns:

a partial function with the domain of other partial function narrowed by this partial function, which maps arguments `x` to `this(k(x))`.

Inherited from:
PartialFunction
Source:
PartialFunction.scala
def compose[A](g: A => K): A => R

Composes two instances of Function1 in a new Function1, with this function applied last.

Composes two instances of Function1 in a new Function1, with this function applied last.

Type parameters:
A

the type to which function `g` can be applied

Value parameters:
g

a function A => T1

Returns:

a new function `f` such that `f(x) == apply(g(x))`

Inherited from:
Function1
Source:
Function1.scala
override def concat[V2 >: V](suffix: IterableOnce[(K, V2)]): CC[K, V2]

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

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

Value parameters:
suffix

the traversable to append.

Returns:

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

Definition Classes
Inherited from:
SortedMapOps
Source:
SortedMap.scala
def concat[B >: (K, V)](suffix: IterableOnce[B]): CC[B]

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

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

Type parameters:
B

the element type of the returned collection.

Value parameters:
suffix

the traversable to append.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def contains(key: K): Boolean

Tests whether this map contains a binding for a key.

Tests whether this map contains a binding for a key.

Value parameters:
key

the key

Returns:

`true` if there is a binding for `key` in this map, `false` otherwise.

Inherited from:
MapOps
Source:
Map.scala
def copyToArray[B >: (K, V)](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 collection.

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

Type parameters:
B

the type of the elements of the array.

Value parameters:
len

the maximal number of elements to copy.

start

the starting index of xs.

xs

the array to fill.

Returns:

the number of elements written to the array

Note:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def copyToArray[B >: (K, V)](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 collection.

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

Type parameters:
B

the type of the elements of the array.

Value parameters:
start

the starting index of xs.

xs

the array to fill.

Returns:

the number of elements written to the array

Note:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def copyToArray[B >: (K, V)](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 collection.

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

Type parameters:
B

the type of the elements of the array.

Value parameters:
xs

the array to fill.

Returns:

the number of elements written to the array

Note:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def corresponds[B](that: IterableOnce[B])(p: ((K, V), 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.

Type parameters:
B

the type of the elements of `that`

Value parameters:
p

the test predicate, which relates elements from both collections

that

the other collection

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`

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def count(p: ((K, V)) => Boolean): Int

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

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

Note: will not terminate for infinite-sized collections.

Value parameters:
p

the predicate used to test elements.

Returns:

the number of elements satisfying the predicate `p`.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def default(key: K): V

Defines the default value computation for the map, returned when a key is not found The method implemented here throws an exception, but it might be overridden in subclasses.

Defines the default value computation for the map, returned when a key is not found The method implemented here throws an exception, but it might be overridden in subclasses.

Value parameters:
key

the given key value for which a binding is missing.

Inherited from:
MapOps
Source:
Map.scala
def drop(n: Int): C

Selects all elements except first n ones.

Selects all elements except first n ones.

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

Value parameters:
n

the number of elements to drop from this iterable collection.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def dropRight(n: Int): C

Selects all elements except last n ones.

Selects all elements except last n ones.

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

Value parameters:
n

the number of elements to drop from this iterable collection.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def dropWhile(p: ((K, V)) => Boolean): C

Drops longest prefix of elements that satisfy a predicate.

Drops longest prefix of elements that satisfy a predicate.

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

Value parameters:
p

The predicate used to test elements.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala

Returns an extractor object with a `unapplySeq` method, which extracts each element of a sequence data.

Returns an extractor object with a `unapplySeq` method, which extracts each element of a sequence data.

Example:

``````val firstChar: String => Option[Char] = _.headOption
Seq("foo", "bar", "baz") match {
case firstChar.unlift.elementWise(c0, c1, c2) =>
println(s"\$c0, \$c1, \$c2") // Output: f, b, b
}``````
Inherited from:
PartialFunction
Source:
PartialFunction.scala
override def empty: CC[K, V]

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
Inherited from:
SortedMapFactoryDefaults
Source:
Iterable.scala
def exists(p: ((K, V)) => Boolean): Boolean

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

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

Note: may not terminate for infinite-sized collections.

Value parameters:
p

the predicate used to test elements.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def filter(pred: ((K, V)) => Boolean): C

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

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

Value parameters:
p

the predicate used to test elements.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def filterNot(pred: ((K, V)) => Boolean): C

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

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

Value parameters:
pred

the predicate used to test elements.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def find(p: ((K, V)) => Boolean): Option[A]

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

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

Note: may not terminate for infinite-sized collections.

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

Value parameters:
p

the predicate used to test elements.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def firstKey: K

Returns the first key of the collection.

Returns the first key of the collection.

Inherited from:
SortedMapOps
Source:
SortedMap.scala
def flatMap[K2, V2](f: ((K, V)) => IterableOnce[(K2, V2)]): CC[K2, V2]

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

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

Value parameters:
f

the function to apply to each element.

Returns:

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

Inherited from:
MapOps
Source:
Map.scala
def flatMap[B](f: ((K, V)) => IterableOnce[B]): CC[B]

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

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

For example:

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

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

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

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

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

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

the element type of the returned collection.

Value parameters:
f

the function to apply to each element.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def flatMap[K2, V2](f: ((K, V)) => IterableOnce[(K2, V2)])(implicit ordering: Ordering[K2]): CC[K2, V2]

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

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

Value parameters:
f

the function to apply to each element.

Returns:

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

Inherited from:
SortedMapOps
Source:
SortedMap.scala
def flatten[B](implicit asIterable: ((K, V)) => IterableOnce[B]): CC[B]

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

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

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

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

val ys = Set(
List(1, 2, 3),
List(3, 2, 1)
).flatten
// ys == Set(1, 2, 3)``````
Type parameters:
B

the type of the elements of each traversable collection.

Value parameters:
asIterable

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

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def fold[A1 >: (K, V)](z: A1)(op: (A1, A1) => A1): A1

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

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

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

Note: will not terminate for infinite-sized collections.

Type parameters:
A1

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

Value parameters:
op

a binary operator that must be associative.

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).

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def foldLeft[B](z: B)(op: (B, (K, V)) => B): B

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

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

Note: will not terminate for infinite-sized collections.

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

Type parameters:
B

the result type of the binary operator.

Value parameters:
op

the binary operator.

z

the start value.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def foldRight[B](z: B)(op: ((K, V), B) => B): B

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

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

Note: will not terminate for infinite-sized collections.

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

Type parameters:
B

the result type of the binary operator.

Value parameters:
op

the binary operator.

z

the start value.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def forall(p: ((K, V)) => Boolean): Boolean

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

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

Note: may not terminate for infinite-sized collections.

Value parameters:
p

the predicate used to test elements.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def foreach[U](f: ((K, V)) => 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.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def foreachEntry[U](f: (K, V) => U): Unit

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

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

Inherited from:
MapOps
Source:
Map.scala
override protected def fromSpecific(coll: IterableOnce[(K, V)]): CC[K, V]

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.

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.

Definition Classes
Inherited from:
SortedMapFactoryDefaults
Source:
Iterable.scala
def get(key: K): Option[V]

Optionally returns the value associated with a key.

Optionally returns the value associated with a key.

Value parameters:
key

the key value

Returns:

an option value containing the value associated with `key` in this map, or `None` if none exists.

Inherited from:
MapOps
Source:
Map.scala
def getOrElse[V1 >: V](key: K, default: => V1): V1

Returns the value associated with a key, or a default value if the key is not contained in the map.

Returns the value associated with a key, or a default value if the key is not contained in the map.

Type parameters:
V1

the result type of the default computation.

Value parameters:
default

a computation that yields a default value in case no binding for `key` is found in the map.

key

the key.

Returns:

the value associated with `key` if it exists, otherwise the result of the `default` computation.

Inherited from:
MapOps
Source:
Map.scala
def groupBy[K](f: ((K, V)) => K): Map[K, C]

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

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

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

Type parameters:
K

the type of keys returned by the discriminator function.

Value parameters:
f

the discriminator function.

Returns:

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

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

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

Inherited from:
IterableOps
Source:
Iterable.scala
def groupMap[K, B](key: ((K, V)) => K)(f: ((K, V)) => B): Map[K, CC[B]]

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

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

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

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

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

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

Type parameters:
B

the type of values returned by the transformation function

K

the type of keys returned by the discriminator function

Value parameters:
f

the element transformation function

key

the discriminator function

Inherited from:
IterableOps
Source:
Iterable.scala
def groupMapReduce[K, B](key: ((K, V)) => K)(f: ((K, V)) => B)(reduce: (B, B) => B): Map[K, B]

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

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

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

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

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

Inherited from:
IterableOps
Source:
Iterable.scala
def grouped(size: Int): Iterator[C]

Partitions elements in fixed size iterable collections.

Partitions elements in fixed size iterable collections.

Value parameters:
size

the number of elements per group

Returns:

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

scala.collection.Iterator, method `grouped`

Inherited from:
IterableOps
Source:
Iterable.scala
override def hashCode(): Int

Calculate a hash code value for the object.

Calculate a hash code value for the object.

The default hashing algorithm is platform dependent.

Note that it is allowed for two objects to have identical hash codes (`o1.hashCode.equals(o2.hashCode)`) yet not be equal (`o1.equals(o2)` returns `false`). A degenerate implementation could always return `0`. However, it is required that if two objects are equal (`o1.equals(o2)` returns `true`) that they have identical hash codes (`o1.hashCode.equals(o2.hashCode)`). Therefore, when overriding this method, be sure to verify that the behavior is consistent with the `equals` method.

Returns:

the hash code value for this object.

Definition Classes
Map -> Any
Inherited from:
Map
Source:
Map.scala

Selects the first element of this iterable collection.

Selects the first element of this iterable collection.

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

Returns:

the first element of this iterable collection.

Throws:
NoSuchElementException

if the iterable collection is empty.

Inherited from:
IterableOps
Source:
Iterable.scala

Optionally selects the first element.

Optionally selects the first element.

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

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def init: C

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.

Inherited from:
IterableOps
Source:
Iterable.scala
def inits: Iterator[C]

Iterates over the inits of this iterable collection.

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

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

Returns:

an iterator over all the inits of this iterable collection

Example:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def isDefinedAt(key: K): Boolean

Tests whether this map contains a binding for a key.

Tests whether this map contains a binding for a key. This method, which implements an abstract method of trait `PartialFunction`, is equivalent to `contains`.

Value parameters:
key

the key

Returns:

`true` if there is a binding for `key` in this map, `false` otherwise.

Inherited from:
MapOps
Source:
Map.scala

Tests whether the collection is empty.

Tests whether the collection is empty.

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

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
override def isTraversableAgain

Tests whether this iterable collection can be repeatedly traversed.

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

Returns:

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

Definition Classes
Inherited from:
IterableOps
Source:
Iterable.scala

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

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

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).

Inherited from:
Iterable
Source:
Iterable.scala

Iterator can be used only once

Iterator can be used only once

Inherited from:
IterableOnce
Source:
IterableOnce.scala
def iteratorFrom(start: K): Iterator[(K, V)]

Creates an iterator over all the key/value pairs contained in this map having a key greater than or equal to `start` according to the ordering of this map.

Creates an iterator over all the key/value pairs contained in this map having a key greater than or equal to `start` according to the ordering of this map. x.iteratorFrom(y) is equivalent to but often more efficient than x.from(y).iterator.

Value parameters:
start

The lower bound (inclusive) on the keys to be returned

Inherited from:
SortedMapOps
Source:
SortedMap.scala
override def keySet: SortedSet[K]

Collects all keys of this map in a set.

Collects all keys of this map in a set.

Returns:

a set containing all keys of this map.

Definition Classes
Inherited from:
SortedMapOps
Source:
SortedMap.scala
def keyStepper[S <: Stepper[_]](implicit shape: StepperShape[K, S]): S

Returns a Stepper for the keys of this map.

Returns a Stepper for the keys of this map. See method stepper.

Inherited from:
MapOps
Source:
Map.scala
def keys: Iterable[K]

Collects all keys of this map in an iterable collection.

Collects all keys of this map in an iterable collection.

Returns:

the keys of this map as an iterable.

Inherited from:
MapOps
Source:
Map.scala

Creates an iterator for all keys.

Creates an iterator for all keys.

Returns:

an iterator over all keys.

Inherited from:
MapOps
Source:
Map.scala
def keysIteratorFrom(start: K): Iterator[K]

Creates an iterator over all the keys(or elements) contained in this collection greater than or equal to `start` according to the ordering of this collection.

Creates an iterator over all the keys(or elements) contained in this collection greater than or equal to `start` according to the ordering of this collection. x.keysIteratorFrom(y) is equivalent to but often more efficient than x.from(y).keysIterator.

Value parameters:
start

The lower bound (inclusive) on the keys to be returned

Inherited from:
SortedMapOps
Source:
SortedMap.scala
Returns:

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

Inherited from:
IterableOnce
Source:
IterableOnce.scala
def last: A

Selects the last element.

Selects the last element.

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

Returns:

The last element of this iterable collection.

Throws:
NoSuchElementException

If the iterable collection is empty.

Inherited from:
IterableOps
Source:
Iterable.scala
def lastKey: K

Returns the last key of the collection.

Returns the last key of the collection.

Inherited from:
SortedMapOps
Source:
SortedMap.scala

Optionally selects the last element.

Optionally selects the last element.

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

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def lazyZip[B](that: Iterable[B]): LazyZip2[A, B, Iterable]

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)``````
Type parameters:
B

the type of the second element in each eventual pair

Value parameters:
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.

Inherited from:
Iterable
Source:
Iterable.scala
def lift: A => Option[B]

Turns this partial function into a plain function returning an `Option` result.

Turns this partial function into a plain function returning an `Option` result.

Returns:

a function that takes an argument `x` to `Some(this(x))` if `this` is defined for `x`, and to `None` otherwise.

Function.unlift

Inherited from:
PartialFunction
Source:
PartialFunction.scala
def map[K2, V2](f: ((K, V)) => (K2, V2)): CC[K2, V2]

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

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

Value parameters:
f

the function to apply to each element.

Returns:

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

Inherited from:
MapOps
Source:
Map.scala
def map[B](f: ((K, V)) => B): CC[B]

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

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

Type parameters:
B

the element type of the returned iterable collection.

Value parameters:
f

the function to apply to each element.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def map[K2, V2](f: ((K, V)) => (K2, V2))(implicit ordering: Ordering[K2]): CC[K2, V2]

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

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

Value parameters:
f

the function to apply to each element.

Returns:

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

Inherited from:
SortedMapOps
Source:
SortedMap.scala

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

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

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).

Inherited from:
Map
Source:
Map.scala
def max[B >: (K, V)](implicit ord: Ordering[B]): A

Finds the largest element.

Finds the largest element.

Note: will not terminate for infinite-sized collections.

Type parameters:
B

The type over which the ordering is defined.

Value parameters:
ord

An ordering to be used for comparing elements.

Returns:

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

Throws:
UnsupportedOperationException

if this collection is empty.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def maxBefore(key: K): Option[(K, V)]

Find the element with largest key less than a given key.

Find the element with largest key less than a given key.

Value parameters:
key

The given key.

Returns:

`None` if there is no such node.

Inherited from:
SortedMapOps
Source:
SortedMap.scala
def maxBy[B](f: ((K, V)) => B)(implicit cmp: 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.

Type parameters:
B

The result type of the function f.

Value parameters:
cmp

An ordering to be used for comparing elements.

f

The measuring function.

Returns:

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

Throws:
UnsupportedOperationException

if this collection is empty.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def maxByOption[B](f: ((K, V)) => B)(implicit cmp: 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.

Type parameters:
B

The result type of the function f.

Value parameters:
cmp

An ordering to be used for comparing elements.

f

The measuring function.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def maxOption[B >: (K, V)](implicit ord: Ordering[B]): Option[A]

Finds the largest element.

Finds the largest element.

Note: will not terminate for infinite-sized collections.

Type parameters:
B

The type over which the ordering is defined.

Value parameters:
ord

An ordering to be used for comparing elements.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def min[B >: (K, V)](implicit ord: Ordering[B]): A

Finds the smallest element.

Finds the smallest element.

Note: will not terminate for infinite-sized collections.

Type parameters:
B

The type over which the ordering is defined.

Value parameters:
ord

An ordering to be used for comparing elements.

Returns:

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

Throws:
UnsupportedOperationException

if this collection is empty.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def minAfter(key: K): Option[(K, V)]

Find the element with smallest key larger than or equal to a given key.

Find the element with smallest key larger than or equal to a given key.

Value parameters:
key

The given key.

Returns:

`None` if there is no such node.

Inherited from:
SortedMapOps
Source:
SortedMap.scala
def minBy[B](f: ((K, V)) => B)(implicit cmp: 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.

Type parameters:
B

The result type of the function f.

Value parameters:
cmp

An ordering to be used for comparing elements.

f

The measuring function.

Returns:

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

Throws:
UnsupportedOperationException

if this collection is empty.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def minByOption[B](f: ((K, V)) => B)(implicit cmp: 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.

Type parameters:
B

The result type of the function f.

Value parameters:
cmp

An ordering to be used for comparing elements.

f

The measuring function.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def minOption[B >: (K, V)](implicit ord: Ordering[B]): Option[A]

Finds the smallest element.

Finds the smallest element.

Note: will not terminate for infinite-sized collections.

Type parameters:
B

The type over which the ordering is defined.

Value parameters:
ord

An ordering to be used for comparing elements.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
final def mkString

Displays all elements of this collection in a string.

Displays all elements of this collection in a string.

Delegates to addString, which can be overridden.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
final def mkString(sep: String): String

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

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

Delegates to addString, which can be overridden.

Value parameters:
sep

the separator string.

Returns:

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

Example:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
final def mkString(start: String, sep: String, end: String): String

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

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

Delegates to addString, which can be overridden.

Value parameters:
end

the ending string.

sep

the separator string.

start

the starting string.

Returns:

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

Example:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
override protected def newSpecificBuilder: Builder[(K, V), CC[K, V]]
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.

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.

Definition Classes
Inherited from:
SortedMapFactoryDefaults
Source:
Iterable.scala

Tests whether the collection is not empty.

Tests whether the collection is not empty.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def orElse[A1 <: K, B1 >: V](that: PartialFunction[A1, B1]): PartialFunction[A1, B1]

Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

Type parameters:
A1

the argument type of the fallback function

B1

the result type of the fallback function

Value parameters:
that

the fallback function

Returns:

a partial function which has as domain the union of the domains of this partial function and `that`. The resulting partial function takes `x` to `this(x)` where `this` is defined, and to `that(x)` where it is not.

Inherited from:
PartialFunction
Source:
PartialFunction.scala
Inherited from:
SortedOps
Source:
SortedOps.scala
def partition(p: ((K, V)) => Boolean): (C, C)

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.

Inherited from:
IterableOps
Source:
Iterable.scala
def partitionMap[A1, A2](f: ((K, V)) => Either[A1, A2]): (CC[A1], CC[A2])

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

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

Example:

``````val xs = Iterable(1, "one", 2, "two", 3, "three") partitionMap {
case i: Int => Left(i)
case s: String => Right(s)
}
// xs == (Iterable(1, 2, 3),
//        Iterable(one, two, three))``````
Type parameters:
A1

the element type of the first resulting collection

A2

the element type of the second resulting collection

Value parameters:
f

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

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def product[B >: (K, V)](implicit num: 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.

Type parameters:
B

the result type of the `*` operator.

Value parameters:
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 collection with respect to the `*` operator in `num`.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def range(from: K, until: K): C

Creates a ranged projection of this collection with both a lower-bound and an upper-bound.

Creates a ranged projection of this collection with both a lower-bound and an upper-bound.

Value parameters:
from

The lower-bound (inclusive) of the ranged projection.

until

The upper-bound (exclusive) of the ranged projection.

Inherited from:
SortedOps
Source:
SortedOps.scala
def rangeFrom(from: K): C

Creates a ranged projection of this collection with no upper-bound.

Creates a ranged projection of this collection with no upper-bound.

Value parameters:
from

The lower-bound (inclusive) of the ranged projection.

Inherited from:
SortedOps
Source:
SortedOps.scala
def rangeImpl(from: Option[K], until: Option[K]): C

Creates a ranged projection of this collection.

Creates a ranged projection of this collection. Any mutations in the ranged projection will update this collection and vice versa.

Note: keys are not guaranteed to be consistent between this collection and the projection. This is the case for buffers where indexing is relative to the projection.

Value parameters:
from

The lower-bound (inclusive) of the ranged projection. `None` if there is no lower bound.

until

The upper-bound (exclusive) of the ranged projection. `None` if there is no upper bound.

Inherited from:
SortedOps
Source:
SortedOps.scala
def rangeTo(to: K): C

Create a range projection of this collection with no lower-bound.

Create a range projection of this collection with no lower-bound.

Value parameters:
to

The upper-bound (inclusive) of the ranged projection.

Inherited from:
SortedMapOps
Source:
SortedMap.scala
def rangeUntil(until: K): C

Creates a ranged projection of this collection with no lower-bound.

Creates a ranged projection of this collection with no lower-bound.

Value parameters:
until

The upper-bound (exclusive) of the ranged projection.

Inherited from:
SortedOps
Source:
SortedOps.scala
def reduce[B >: (K, V)](op: (B, B) => B): B

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

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

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

Type parameters:
B

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

Value parameters:
op

A binary operator that must be associative.

Returns:

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

Throws:
UnsupportedOperationException

if this collection is empty.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def reduceLeft[B >: (K, V)](op: (B, (K, V)) => B): B

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

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

Note: will not terminate for infinite-sized collections.

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

Type parameters:
B

the result type of the binary operator.

Value parameters:
op

the binary operator.

Returns:

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

Throws:
UnsupportedOperationException

if this collection is empty.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def reduceLeftOption[B >: (K, V)](op: (B, (K, V)) => B): Option[B]

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

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

Note: will not terminate for infinite-sized collections.

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

Type parameters:
B

the result type of the binary operator.

Value parameters:
op

the binary operator.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def reduceOption[B >: (K, V)](op: (B, B) => B): Option[B]

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

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

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

Type parameters:
B

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

Value parameters:
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.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def reduceRight[B >: (K, V)](op: ((K, V), B) => B): B

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

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

Note: will not terminate for infinite-sized collections.

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

Type parameters:
B

the result type of the binary operator.

Value parameters:
op

the binary operator.

Returns:

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

Throws:
UnsupportedOperationException

if this collection is empty.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def reduceRightOption[B >: (K, V)](op: ((K, V), B) => B): Option[B]

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

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

Note: will not terminate for infinite-sized collections.

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

Type parameters:
B

the result type of the binary operator.

Value parameters:
op

the binary operator.

Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
protected def reversed: Iterable[A]
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def runWith[U](action: V => U): A => Boolean

Composes this partial function with an action function which gets applied to results of this partial function.

Composes this partial function with an action function which gets applied to results of this partial function. The action function is invoked only for its side effects; its result is ignored.

Note that expression `pf.runWith(action)(x)` is equivalent to

``if(pf isDefinedAt x) { action(pf(x)); true } else false``

except that `runWith` is implemented via `applyOrElse` and thus potentially more efficient. Using `runWith` avoids double evaluation of pattern matchers and guards for partial function literals.

Value parameters:
action

the action function

Returns:

a function which maps arguments `x` to `isDefinedAt(x)`. The resulting function runs `action(this(x))` where `this` is defined.

`applyOrElse`.

Inherited from:
PartialFunction
Source:
PartialFunction.scala
def scan[B >: (K, V)](z: B)(op: (B, B) => B): CC[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.

Type parameters:
B

element type of the resulting collection

Value parameters:
op

the associative operator for the scan

z

neutral element for the operator `op`

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def scanLeft[B](z: B)(op: (B, (K, V)) => B): CC[B]

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

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

Note: will not terminate for infinite-sized collections.

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

Type parameters:
B

the type of the elements in the resulting collection

Value parameters:
op

the binary operator applied to the intermediate result and the element

z

the initial value

Returns:

collection with intermediate results

Inherited from:
IterableOps
Source:
Iterable.scala
def scanRight[B](z: B)(op: ((K, V), B) => B): CC[B]

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

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

Note: will not terminate for infinite-sized collections.

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

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

Example:

``List(1, 2, 3, 4).scanRight(0)(_ + _) == List(10, 9, 7, 4, 0)``
Type parameters:
B

the type of the elements in the resulting collection

Value parameters:
op

the binary operator applied to the intermediate result and the element

z

the initial value

Returns:

collection with intermediate results

Inherited from:
IterableOps
Source:
Iterable.scala
def size: Int

The size of this collection.

The size of this collection.

Note: will not terminate for infinite-sized collections.

Returns:

the number of elements in this collection.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def sizeCompare(that: Iterable[_]): Int

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

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

Value parameters:
that

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

Returns:

A value `x` where

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

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

Inherited from:
IterableOps
Source:
Iterable.scala
def sizeCompare(otherSize: Int): Int

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

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

Value parameters:
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`.

Inherited from:
IterableOps
Source:
Iterable.scala
final def sizeIs

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

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

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

``````this.sizeIs < size     // this.sizeCompare(size) < 0
this.sizeIs <= size    // this.sizeCompare(size) <= 0
this.sizeIs == size    // this.sizeCompare(size) == 0
this.sizeIs != size    // this.sizeCompare(size) != 0
this.sizeIs >= size    // this.sizeCompare(size) >= 0
this.sizeIs > size     // this.sizeCompare(size) > 0``````
Inherited from:
IterableOps
Source:
Iterable.scala
def slice(from: Int, until: Int): C

Selects an interval of elements.

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

``from <= indexOf(x) < until``

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

Value parameters:
from

the lowest index to include from this iterable collection.

until

the lowest index to EXCLUDE from this iterable collection.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def sliding(size: Int, step: Int): Iterator[C]

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.

Value parameters:
size

the number of elements per group

step

the distance between the first elements of successive groups

Returns:

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

scala.collection.Iterator, method `sliding`

Example:

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

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

Inherited from:
IterableOps
Source:
Iterable.scala
def sliding(size: Int): Iterator[C]

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.

Value parameters:
size

the number of elements per group

Returns:

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

scala.collection.Iterator, method `sliding`

Example:

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

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

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

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

Inherited from:
IterableOps
Source:
Iterable.scala
def span(p: ((K, V)) => Boolean): (C, C)

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

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

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

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

Value parameters:
p

the test predicate

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
override def splitAt(n: Int): (C, C)

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

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

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

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

Value parameters:
n

the position at which to split.

Returns:

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

Definition Classes
Inherited from:
IterableOps
Source:
Iterable.scala
def stepper[S <: Stepper[_]](implicit shape: StepperShape[(K, V), S]): S

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

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

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

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

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.

Inherited from:
IterableOnce
Source:
IterableOnce.scala
def sum[B >: (K, V)](implicit num: 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.

Type parameters:
B

the result type of the `+` operator.

Value parameters:
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 collection with respect to the `+` operator in `num`.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def tail: C

The rest of the collection without its first element.

The rest of the collection without its first element.

Inherited from:
IterableOps
Source:
Iterable.scala
def tails: Iterator[C]

Iterates over the tails of this iterable collection.

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

Returns:

an iterator over all the tails of this iterable collection

Example:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def take(n: Int): C

Selects the first n elements.

Selects the first n elements.

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

Value parameters:
n

the number of elements to take from this iterable collection.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def takeRight(n: Int): C

Selects the last n elements.

Selects the last n elements.

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

Value parameters:
n

the number of elements to take from this iterable collection.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def takeWhile(p: ((K, V)) => Boolean): C

Takes longest prefix of elements that satisfy a predicate.

Takes longest prefix of elements that satisfy a predicate.

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

Value parameters:
p

The predicate used to test elements.

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
override def tapEach[U](f: ((K, V)) => U): C

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.

Type parameters:
U

the return type of f

Value parameters:
f

a function to apply to each element in this iterable collection

Returns:

The same logical collection as this

Definition Classes
Inherited from:
IterableOps
Source:
Iterable.scala
def to[C1](factory: Factory[(K, V), 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]

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def toArray[B >: (K, V) : ClassTag]: Array[B]

Convert collection to array.

Convert collection to array.

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
final def toBuffer[B >: (K, V)]: Buffer[B]
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def toList: List[A]
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def toMap[K, V](implicit ev: (K, V) <:< (K, V)): Map[K, V]
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def toSeq: Seq[A]
Returns:

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

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def toSet[B >: (K, V)]: Set[B]
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
override def toString(): String

Returns a string representation of the object.

Returns a string representation of the object.

The default representation is platform dependent.

Returns:

a string representation of the object.

Definition Classes
Inherited from:
Map
Source:
Map.scala
def transpose[B](implicit asIterable: ((K, V)) => Iterable[B]): CC[CC[B]]

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

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

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

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

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

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

Type parameters:
B

the type of the elements of each iterable collection.

Value parameters:
asIterable

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

Returns:

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

Throws:
IllegalArgumentException

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

Inherited from:
IterableOps
Source:
Iterable.scala
def unapply(a: K): Option[B]

Tries to extract a `B` from an `A` in a pattern matching expression.

Tries to extract a `B` from an `A` in a pattern matching expression.

Inherited from:
PartialFunction
Source:
PartialFunction.scala
def unzip[A1, A2](implicit asPair: ((K, V)) => (A1, A2)): (CC[A1], CC[A2])

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

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

``````val xs = Iterable(
(1, "one"),
(2, "two"),
(3, "three")).unzip
// xs == (Iterable(1, 2, 3),
//        Iterable(one, two, three))``````
Type parameters:
A1

the type of the first half of the element pairs

A2

the type of the second half of the element pairs

Value parameters:
asPair

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

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def unzip3[A1, A2, A3](implicit asTriple: ((K, V)) => (A1, A2, A3)): (CC[A1], CC[A2], CC[A3])

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

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

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

Value parameters:
asTriple

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

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def valueStepper[S <: Stepper[_]](implicit shape: StepperShape[V, S]): S

Returns a Stepper for the values of this map.

Returns a Stepper for the values of this map. See method stepper.

Inherited from:
MapOps
Source:
Map.scala

Collects all values of this map in an iterable collection.

Collects all values of this map in an iterable collection.

Returns:

the values of this map as an iterable.

Inherited from:
MapOps
Source:
Map.scala

Creates an iterator for all values in this map.

Creates an iterator for all values in this map.

Returns:

an iterator over all values that are associated with some key in this map.

Inherited from:
MapOps
Source:
Map.scala
def valuesIteratorFrom(start: K): Iterator[V]

Creates an iterator over all the values contained in this map that are associated with a key greater than or equal to `start` according to the ordering of this map.

Creates an iterator over all the values contained in this map that are associated with a key greater than or equal to `start` according to the ordering of this map. x.valuesIteratorFrom(y) is equivalent to but often more efficient than x.from(y).valuesIterator.

Value parameters:
start

The lower bound (inclusive) on the keys to be returned

Inherited from:
SortedMapOps
Source:
SortedMap.scala
override def view: MapView[K, V]

A view over the elements of this collection.

A view over the elements of this collection.

Definition Classes
Inherited from:
MapOps
Source:
Map.scala
override def withFilter(p: ((K, V)) => Boolean): WithFilter[K, V, WithFilterCC, UnsortedCC, CC]

Creates a non-strict filter of this map.

Creates a non-strict filter of this map.

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

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

Value parameters:
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 map which satisfy the predicate `p`.

Definition Classes
Inherited from:
SortedMapFactoryDefaults
Source:
Iterable.scala
def zip[B](that: IterableOnce[B]): CC[(A, B)]

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

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

Type parameters:
B

the type of the second half of the returned pairs

Value parameters:
that

The iterable providing the second half of each result pair

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def zipAll[A1 >: (K, V), B](that: Iterable[B], thisElem: A1, thatElem: B): CC[(A1, B)]

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

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

Value parameters:
that

the iterable providing the second half of each result pair

thatElem

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

thisElem

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

Returns:

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

Inherited from:
IterableOps
Source:
Iterable.scala
def zipWithIndex: CC[(A, Int)]

Zips this iterable collection with its indices.

Zips this iterable collection with its indices.

Returns:

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

Example:

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

Inherited from:
IterableOps
Source:
Iterable.scala

### Deprecated and Inherited methods

override def +[V1 >: V](elem1: (K, V1), elem2: (K, V1), elems: (K, V1)*): CC[K, V1]
Deprecated
Definition Classes
Inherited from:
SortedMapOps
Source:
SortedMap.scala
override def +[V1 >: V](kv: (K, V1)): CC[K, V1]
Deprecated
Definition Classes
Inherited from:
SortedMapOps
Source:
SortedMap.scala
def ++:[V1 >: V](that: IterableOnce[(K, V1)]): CC[K, V1]
Deprecated
Inherited from:
MapOps
Source:
Map.scala
def ++:[B >: (K, V)](that: IterableOnce[B]): CC[B]
Deprecated
Inherited from:
IterableOps
Source:
Iterable.scala
def -(key1: K, key2: K, keys: K*): Map[K, V]
Deprecated
Inherited from:
Map
Source:
Map.scala
def -(key: K): Map[K, V]
Deprecated
Inherited from:
Map
Source:
Map.scala
def --(keys: IterableOnce[K]): C
Deprecated
Inherited from:
MapOps
Source:
Map.scala
final def /:[B](z: B)(op: (B, (K, V)) => B): B
Deprecated
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
final def :\[B](z: B)(op: ((K, V), B) => B): B
Deprecated
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def aggregate[B](z: => B)(seqop: (B, (K, V)) => B, combop: (B, B) => B): B
Deprecated
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
Deprecated
Inherited from:
IterableOps
Source:
Iterable.scala
def compare(k0: K, k1: K): Int

Comparison function that orders keys.

Comparison function that orders keys.

Deprecated
Inherited from:
SortedOps
Source:
SortedOps.scala
final def copyToBuffer[B >: (K, V)](dest: Buffer[B]): Unit
Deprecated
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def filterKeys(p: K => Boolean): MapView[K, V]

Filters this map by retaining only keys satisfying a predicate.

Filters this map by retaining only keys satisfying a predicate.

Value parameters:
p

the predicate used to test keys

Returns:

an immutable map consisting only of those key value pairs of this map where the key satisfies the predicate `p`. The resulting map wraps the original map without copying any elements.

Deprecated
Inherited from:
MapOps
Source:
Map.scala
final def from(from: K): C

Creates a ranged projection of this collection with no upper-bound.

Creates a ranged projection of this collection with no upper-bound.

Value parameters:
from

The lower-bound (inclusive) of the ranged projection.

Deprecated
Inherited from:
SortedOps
Source:
SortedOps.scala

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

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

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

Returns:

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

method `knownSize` for a more useful alternative

Deprecated

This method is deprecated in 2.13 because it does not provide any actionable information. As noted above, even the collection library itself does not use it. When there is no guarantee that a collection is finite, it is generally best to attempt a computation anyway and document that it will not terminate for infinite collections rather than backing out because this would prevent performing the computation on collections that are in fact finite even though `hasDefiniteSize` returns `false`.

Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
def mapValues[W](f: V => W): MapView[K, W]

Transforms this map by applying a function to every retrieved value.

Transforms this map by applying a function to every retrieved value.

Value parameters:
f

the function used to transform values of this map.

Returns:

a map view which maps every key of this map to `f(this(key))`. The resulting map wraps the original map without copying any elements.

Deprecated
Inherited from:
MapOps
Source:
Map.scala
final def repr: C
Deprecated
Inherited from:
IterableOps
Source:
Iterable.scala
def seq: Iterable.this.type
Deprecated
Inherited from:
Iterable
Source:
Iterable.scala
final def to(to: K): C

Create a range projection of this collection with no lower-bound.

Create a range projection of this collection with no lower-bound.

Value parameters:
to

The upper-bound (inclusive) of the ranged projection.

Deprecated
Inherited from:
SortedOps
Source:
SortedOps.scala
final def toIterable: Iterable.this.type
Returns:

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

Deprecated
Inherited from:
Iterable
Source:
Iterable.scala
final def toIterator: Iterator[A]
Deprecated
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
final def toStream: Stream[A]
Deprecated
Inherited from:
IterableOnceOps
Source:
IterableOnce.scala
final def toTraversable: Iterable[A]

Converts this iterable collection to an unspecified Iterable.

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

Returns:

An Iterable containing all elements of this iterable collection.

Deprecated
Inherited from:
IterableOps
Source:
Iterable.scala
final def until(until: K): C

Creates a ranged projection of this collection with no lower-bound.

Creates a ranged projection of this collection with no lower-bound.

Value parameters:
until

The upper-bound (exclusive) of the ranged projection.

Deprecated
Inherited from:
SortedOps
Source:
SortedOps.scala
def view(from: Int, until: Int): View[A]

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

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

Deprecated
Inherited from:
IterableOps
Source:
Iterable.scala