scala.collection.parallel.mutable

# ParMapLike

#### trait ParMapLike[K, V, +Repr <: ParMapLike[K, V, Repr, Sequential] with ParMap[K, V], +Sequential <: mutable.Map[K, V] with mutable.MapLike[K, V, Sequential]] extends GenMapLike[K, V, Repr] with parallel.ParMapLike[K, V, Repr, Sequential] with Growable[(K, V)] with Shrinkable[K] with mutable.Cloneable[Repr]

A template trait for mutable parallel maps. This trait is to be mixed in with concrete parallel maps to override the representation type.

The higher-order functions passed to certain operations may contain side-effects. Since implementations of bulk operations may not be sequential, this means that side-effects may not be predictable and may produce data-races, deadlocks or invalidation of state if care is not taken. It is up to the programmer to either avoid using side-effects or to use some form of synchronization when accessing mutable data.

K

  the key type of the map

V

  the value type of the map

Since

  2.9

Linear Supertypes
mutable.Cloneable[Repr], Cloneable, java.lang.Cloneable, Shrinkable[K], Growable[(K, V)], Clearable, parallel.ParMapLike[K, V, Repr, Sequential], ParIterableLike[(K, V), Repr, Sequential], HasNewCombiner[(K, V), Repr], Parallel, CustomParallelizable[(K, V), Repr], GenMapLike[K, V, Repr], Equals, GenIterableLike[(K, V), Repr], GenTraversableLike[(K, V), Repr], Parallelizable[(K, V), Repr], GenTraversableOnce[(K, V)], AnyRef, Any
Known Subclasses
ParHashMap, ParMap, ParTrieMap, WithDefault
Type Hierarchy Learn more about scaladoc diagrams
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2. By inheritance

Inherited

1. ParMapLike
2. Cloneable
3. Cloneable
4. Cloneable
5. Shrinkable
6. Growable
7. Clearable
8. ParMapLike
9. ParIterableLike
10. HasNewCombiner
11. Parallel
12. CustomParallelizable
13. GenMapLike
14. Equals
15. GenIterableLike
16. GenTraversableLike
17. Parallelizable
18. GenTraversableOnce
19. AnyRef
20. Any

Implicitly

1. by CollectionsHaveToParArray
2. by any2stringadd
3. by StringFormat
4. by Ensuring
5. by ArrowAssoc

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Visibility

1. Public
2. All

### Type Members

1. #### trait Accessor[R, Tp] extends StrictSplitterCheckTask[R, Tp]

   Standard accessor task that iterates over the elements of the collection.

2. #### class Aggregate[S] extends Accessor[S, Aggregate[S]]

   Attributes
     protected[this]
   Definition Classes
     ParIterableLike

3. #### trait BuilderOps[Elem, To] extends AnyRef

   Definition Classes
     ParIterableLike

4. #### class Collect[S, That] extends Transformer[Combiner[S, That], Collect[S, That]]

   Attributes
     protected[this]
   Definition Classes
     ParIterableLike

5. #### abstract class Composite[FR, SR, R, First <: StrictSplitterCheckTask[FR, _], Second <: StrictSplitterCheckTask[SR, _]] extends NonDivisibleTask[R, Composite[FR, SR, R, First, Second]]

   Attributes
     protected[this]
   Definition Classes
     ParIterableLike

6. #### class Copy[U >: T, That] extends Transformer[Combiner[U, That], Copy[U, That]]

   Attributes
     protected
   Definition Classes
     ParIterableLike

7. #### class CopyToArray[U >: T, This >: Repr] extends Accessor[Unit, CopyToArray[U, This]]

   Attributes
     protected[this]
   Definition Classes
     ParIterableLike

8. #### class Count extends Accessor[Int, Count]

   Attributes
     protected[this]
   Definition Classes
     ParIterableLike

9. #### class CreateScanTree[U >: T] extends Transformer[ScanTree[U], CreateScanTree[U]]

   Attributes
     protected[this]
   Definition Classes
     ParIterableLike

10. #### class DefaultKeySet extends ParSet[K]

    Attributes
      protected
    Definition Classes
      ParMapLike

11. #### class DefaultValuesIterable extends ParIterable[V]

    Attributes
      protected
    Definition Classes
      ParMapLike

12. #### class Drop[U >: T, This >: Repr] extends Transformer[Combiner[U, This], Drop[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

13. #### class Exists extends Accessor[Boolean, Exists]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

14. #### class Filter[U >: T, This >: Repr] extends Transformer[Combiner[U, This], Filter[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

15. #### class FilterNot[U >: T, This >: Repr] extends Transformer[Combiner[U, This], FilterNot[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

16. #### class Find[U >: T] extends Accessor[Option[U], Find[U]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

17. #### class FlatMap[S, That] extends Transformer[Combiner[S, That], FlatMap[S, That]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

18. #### class Fold[U >: T] extends Accessor[U, Fold[U]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

19. #### class Forall extends Accessor[Boolean, Forall]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

20. #### class Foreach[S] extends Accessor[Unit, Foreach[S]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

21. #### class FromScanTree[U >: T, That] extends StrictSplitterCheckTask[Combiner[U, That], FromScanTree[U, That]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

22. #### class GroupBy[K, U >: T] extends Transformer[HashMapCombiner[K, U], GroupBy[K, U]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

23. #### class Map[S, That] extends Transformer[Combiner[S, That], Map[S, That]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

24. #### class Max[U >: T] extends Accessor[Option[U], Max[U]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

25. #### class Min[U >: T] extends Accessor[Option[U], Min[U]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

26. #### trait NonDivisible[R] extends NonDivisibleTask[R, NonDivisible[R]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

27. #### trait NonDivisibleTask[R, Tp] extends StrictSplitterCheckTask[R, Tp]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

28. #### abstract class ParComposite[FR, SR, R, First <: StrictSplitterCheckTask[FR, _], Second <: StrictSplitterCheckTask[SR, _]] extends Composite[FR, SR, R, First, Second]

    Performs two tasks in parallel, and waits for both to finish.

29. #### class Partition[U >: T, This >: Repr] extends Transformer[(Combiner[U, This], Combiner[U, This]), Partition[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

30. #### class Product[U >: T] extends Accessor[U, Product[U]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

31. #### class Reduce[U >: T] extends Accessor[Option[U], Reduce[U]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

32. #### abstract class ResultMapping[R, Tp, R1] extends NonDivisibleTask[R1, ResultMapping[R, Tp, R1]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

33. #### type SSCTask[R, Tp] = StrictSplitterCheckTask[R, Tp]

    Definition Classes
      ParIterableLike

34. #### case class ScanLeaf[U >: T](pit: IterableSplitter[U], op: (U, U) ⇒ U, from: Int, len: Int, prev: Option[ScanLeaf[U]], acc: U) extends ScanTree[U] with scala.Product with Serializable

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

35. #### case class ScanNode[U >: T](left: ScanTree[U], right: ScanTree[U]) extends ScanTree[U] with scala.Product with Serializable

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

36. #### trait ScanTree[U >: T] extends AnyRef

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

37. #### abstract class SeqComposite[FR, SR, R, First <: StrictSplitterCheckTask[FR, _], Second <: StrictSplitterCheckTask[SR, _]] extends Composite[FR, SR, R, First, Second]

    Sequentially performs one task after another.

38. #### trait SignallingOps[PI <: DelegatedSignalling] extends AnyRef

    Definition Classes
      ParIterableLike

39. #### class Slice[U >: T, This >: Repr] extends Transformer[Combiner[U, This], Slice[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

40. #### class Span[U >: T, This >: Repr] extends Transformer[(Combiner[U, This], Combiner[U, This]), Span[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

41. #### class SplitAt[U >: T, This >: Repr] extends Transformer[(Combiner[U, This], Combiner[U, This]), SplitAt[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

42. #### trait StrictSplitterCheckTask[R, Tp] extends Task[R, Tp]

    Attributes
      protected
    Definition Classes
      ParIterableLike

43. #### class Sum[U >: T] extends Accessor[U, Sum[U]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

44. #### class Take[U >: T, This >: Repr] extends Transformer[Combiner[U, This], Take[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

45. #### class TakeWhile[U >: T, This >: Repr] extends Transformer[(Combiner[U, This], Boolean), TakeWhile[U, This]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

46. #### trait TaskOps[R, Tp] extends AnyRef

    Definition Classes
      ParIterableLike

47. #### class ToParCollection[U >: T, That] extends Transformer[Combiner[U, That], ToParCollection[U, That]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

48. #### class ToParMap[K, V, That] extends Transformer[Combiner[(K, V), That], ToParMap[K, V, That]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

49. #### trait Transformer[R, Tp] extends Accessor[R, Tp]

    Attributes
      protected
    Definition Classes
      ParIterableLike

50. #### class Zip[U >: T, S, That] extends Transformer[Combiner[(U, S), That], Zip[U, S, That]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

51. #### class ZipAll[U >: T, S, That] extends Transformer[Combiner[(U, S), That], ZipAll[U, S, That]]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

### Abstract Value Members

1. #### abstract def +=(kv: (K, V)): ParMapLike.this.type

   adds a single element to this shrinkable collection.

   adds a single element to this shrinkable collection.

   returns

     the shrinkable collection itself

   Definition Classes
     ParMapLike → Growable

2. #### abstract def -=(key: K): ParMapLike.this.type

   Removes a single element from this shrinkable collection.

   Removes a single element from this shrinkable collection.

   returns

     the shrinkable collection itself

   Definition Classes
     ParMapLike → Shrinkable

3. #### abstract def clear(): Unit

   Clears the shrinkable collection's contents.

   Clears the shrinkable collection's contents. After this operation, the shrinkable collection is empty.

   Definition Classes
     ParMapLike → Growable → Clearable

4. #### abstract def empty: Repr

   Definition Classes
     ParMapLike

5. #### abstract def get(key: K): Option[V]

   Definition Classes
     GenMapLike

6. #### abstract def newCombiner: Combiner[(K, V), Repr]

   Attributes
     protected[this]
   Definition Classes
     HasNewCombiner

7. #### abstract def put(key: K, value: V): Option[V]

8. #### abstract def seq: Sequential

   Definition Classes
     ParIterableLike → Parallelizable → GenTraversableOnce

9. #### abstract def size: Int

   The size of this general collection.

   The size of this general collection.

   Note: will not terminate for infinite-sized collections.

   returns

     the number of elements in this general collection.

   Definition Classes
     GenTraversableLike → GenTraversableOnce

10. #### abstract def splitter: IterableSplitter[(K, V)]

    Creates a new parallel iterator used to traverse the elements of this parallel collection.

    Creates a new parallel iterator used to traverse the elements of this parallel collection. This iterator is more specific than the iterator of the returned by `iterator`, and augmented with additional accessor and transformer methods.

    returns

      a parallel iterator

    Attributes
      protected[scala.collection.parallel]
    Definition Classes
      ParIterableLike

11. #### abstract def stringPrefix: String

    Defines the prefix of this object's `toString` representation.

    Defines the prefix of this object's `toString` representation.

    returns

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

    Definition Classes
      GenTraversableLike

### Concrete Value Members

1. #### final def !=(arg0: Any): Boolean

   Definition Classes
     AnyRef → Any

2. #### final def ##(): Int

   Definition Classes
     AnyRef → Any

3. #### def +[U >: V](kv: (K, U)): ParMap[K, U]

   Definition Classes
     ParMapLike → GenMapLike

4. #### def ++[B](that: GenTraversableOnce[B]): Shrinkable[B]

   [use case] Returns a new shrinkable collection containing the elements from the left hand operand followed by the elements from the right hand operand.

   [use case]

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

   Example:

       scala> val a = List(1)
       a: List[Int] = List(1)

       scala> val b = List(2)
       b: List[Int] = List(2)

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

       scala> val d = List('a')
       d: List[Char] = List(a)

       scala> val e = c ++ d
       e: List[AnyVal] = List(1, 2, a)

   B

     the element type of the returned collection.

   that

     the traversable to append.

   returns

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

   Definition Classes
     ParIterableLike → GenTraversableLike
   Full Signature

   #### def ++[U >: (K, V), That](that: GenTraversableOnce[U])(implicit bf: CanBuildFrom[Repr, U, That]): That

5. #### def ++=(xs: TraversableOnce[(K, V)]): ParMapLike.this.type

   adds all elements produced by a TraversableOnce to this growable collection.

   adds all elements produced by a TraversableOnce to this growable collection.

   xs

     the TraversableOnce producing the elements to add.

   returns

     the growable collection itself.

   Definition Classes
     Growable

6. #### def +=(elem1: (K, V), elem2: (K, V), elems: (K, V)*): ParMapLike.this.type

   adds two or more elements to this growable collection.

   adds two or more elements to this growable collection.

   elem1

     the first element to add.

   elem2

     the second element to add.

   elems

     the remaining elements to add.

   returns

     the growable collection itself

   Definition Classes
     Growable

7. #### def -(key: K): Repr

   Definition Classes
     ParMapLike → GenMapLike

8. #### def --=(xs: TraversableOnce[K]): ParMapLike.this.type

   Removes all elements produced by an iterator from this shrinkable collection.

   Removes all elements produced by an iterator from this shrinkable collection.

   xs

     the iterator producing the elements to remove.

   returns

     the shrinkable collection itself

   Definition Classes
     Shrinkable

9. #### def -=(elem1: K, elem2: K, elems: K*): ParMapLike.this.type

   Removes two or more elements from this shrinkable collection.

   Removes two or more elements from this shrinkable collection.

   elem1

     the first element to remove.

   elem2

     the second element to remove.

   elems

     the remaining elements to remove.

   returns

     the shrinkable collection itself

   Definition Classes
     Shrinkable

10. #### def ->[B](y: B): (ParMapLike[K, V, Repr, Sequential], B)

    Implicit information
      This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to ArrowAssoc[ParMapLike[K, V, Repr, Sequential]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
      ArrowAssoc
    Annotations
      @inline()

11. #### def /:[S](z: S)(op: (S, (K, V)) ⇒ S): S

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

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

    Note: `/:` is alternate syntax for `foldLeft`; `z /: xs` is the same as `xs foldLeft z`.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

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

        scala> val b = (5 /: a)(_+_)
        b: Int = 15

        scala> val c = (5 /: a)((x,y) => x + y)
        c: Int = 15

    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.

    z

      the start value.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this general iterable collection , going left to right with the start value `z` on the left:

          op(...op(op(z, x_1), x_2), ..., x_n)

      where `x1, ..., xn` are the elements of this general iterable collection .

    Definition Classes
      ParIterableLike → GenTraversableOnce

12. #### def :\[S](z: S)(op: ((K, V), S) ⇒ S): S

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

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

    Note: `:\` is alternate syntax for `foldRight`; `xs :\ z` is the same as `xs foldRight z`.

    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.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

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

        scala> val b = (a :\ 5)(_+_)
        b: Int = 15

        scala> val c = (a :\ 5)((x,y) => x + y)
        c: Int = 15

    z

      the start value

    op

      the binary operator

    returns

      the result of inserting `op` between consecutive elements of this general iterable collection , going right to left with the start value `z` on the right:

          op(x_1, op(x_2, ... op(x_n, z)...))

      where `x1, ..., xn` are the elements of this general iterable collection .

    Definition Classes
      ParIterableLike → GenTraversableOnce

13. #### final def ==(arg0: Any): Boolean

    Definition Classes
      AnyRef → Any

14. #### def aggregate[S](z: ⇒ S)(seqop: (S, (K, V)) ⇒ S, combop: (S, S) ⇒ S): S

    Aggregates the results of applying an operator to subsequent elements.

    Aggregates the results of applying an operator to subsequent elements.

    This is a more general form of `fold` and `reduce`. It has similar semantics, but does not require the result to be a supertype of the element type. It traverses the elements in different partitions sequentially, using `seqop` to update the result, and then applies `combop` to results from different partitions. The implementation of this operation may operate on an arbitrary number of collection partitions, so `combop` may be invoked arbitrary number of times.

    For example, one might want to process some elements and then produce a `Set`. In this case, `seqop` would process an element and append it to the set, while `combop` would concatenate two sets from different partitions together. The initial value `z` would be an empty set.

        pc.aggregate(Set[Int]())(_ += process(_), _ ++ _)

    Another example is calculating geometric mean from a collection of doubles (one would typically require big doubles for this).

    S

      the type of accumulated results

    z

      the initial value for the accumulated result of the partition - this will typically be the neutral element for the `seqop` operator (e.g. `Nil` for list concatenation or `0` for summation) and may be evaluated more than once

    seqop

      an operator used to accumulate results within a partition

    combop

      an associative operator used to combine results from different partitions

    Definition Classes
      ParIterableLike → GenTraversableOnce

15. #### def apply(key: K): V

    Definition Classes
      ParMapLike → GenMapLike

16. #### final def asInstanceOf[T0]: T0

    Definition Classes
      Any

17. #### def bf2seq[S, That](bf: CanBuildFrom[Repr, S, That]): CanBuildFrom[Sequential, S, That]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

18. #### implicit def builder2ops[Elem, To](cb: Builder[Elem, To]): BuilderOps[Elem, To]

    Attributes
      protected
    Definition Classes
      ParIterableLike

19. #### def canEqual(other: Any): Boolean

    Definition Classes
      ParIterableLike

20. #### def clone(): Repr

    Definition Classes
      Cloneable → AnyRef

21. #### def collect[B](pf: PartialFunction[A, B]): Shrinkable[B]

    [use case] Builds a new collection by applying a partial function to all elements of this shrinkable collection on which the function is defined.

    [use case]

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

    B

      the element type of the returned collection.

    pf

      the partial function which filters and maps the shrinkable collection.

    returns

      a new shrinkable 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.

    Definition Classes
      ParIterableLike → GenTraversableLike
    Full Signature

    #### def collect[S, That](pf: PartialFunction[(K, V), S])(implicit bf: CanBuildFrom[Repr, S, That]): That

22. #### def combinerFactory[S, That](cbf: () ⇒ Combiner[S, That]): CombinerFactory[S, That]

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

23. #### def combinerFactory: CombinerFactory[(K, V), Repr]

    Creates a combiner factory.

    Creates a combiner factory. Each combiner factory instance is used once per invocation of a parallel transformer method for a single collection.

    The default combiner factory creates a new combiner every time it is requested, unless the combiner is thread-safe as indicated by its `canBeShared` method. In this case, the method returns a factory which returns the same combiner each time. This is typically done for concurrent parallel collections, the combiners of which allow thread safe access.

    Attributes
      protected[this]
    Definition Classes
      ParIterableLike

24. #### 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.

    key

      the key

    returns

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

    Definition Classes
      ParMapLike → GenMapLike

25. #### def copyToArray[U >: (K, V)](xs: Array[U], start: Int, len: Int): Unit

    Definition Classes
      ParIterableLike → GenTraversableOnce

26. #### def copyToArray(xs: Array[A], start: Int): Unit

    [use case] Copies values of this shrinkable collection to an array.

    [use case]

    Copies values of this shrinkable collection to an array. Fills the given array `xs` with values of this shrinkable collection, beginning at index `start`. Copying will stop once either the end of the current shrinkable collection is reached, or the end of the array is reached.

    Note: will not terminate for infinite-sized collections.

    xs

      the array to fill.

    start

      the starting index.

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Full Signature

    #### def copyToArray[U >: (K, V)](xs: Array[U], start: Int): Unit

27. #### def copyToArray(xs: Array[A]): Unit

    [use case] Copies values of this shrinkable collection to an array.

    [use case]

    Copies values of this shrinkable collection to an array. Fills the given array `xs` with values of this shrinkable collection. Copying will stop once either the end of the current shrinkable collection is reached, or the end of the array is reached.

    Note: will not terminate for infinite-sized collections.

    xs

      the array to fill.

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Full Signature

    #### def copyToArray[U >: (K, V)](xs: Array[U]): Unit

28. #### def count(p: ((K, V)) ⇒ Boolean): Int

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

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

    p

      the predicate used to test elements.

    returns

      the number of elements satisfying the predicate `p`.

    Definition Classes
      ParIterableLike → GenTraversableOnce

29. #### def debugBuffer: ArrayBuffer[String]

    Definition Classes
      ParIterableLike

30. #### def default(key: K): V

    Definition Classes
      ParMapLike → GenMapLike

31. #### implicit def delegatedSignalling2ops[PI <: DelegatedSignalling](it: PI): SignallingOps[PI]

    Attributes
      protected
    Definition Classes
      ParIterableLike

32. #### def drop(n: Int): Repr

    Selects all elements except first n ones.

    Selects all elements except first n ones.

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

    n

      the number of elements to drop from this general iterable collection .

    returns

      a general iterable collection consisting of all elements of this general iterable collection except the first `n` ones, or else the empty general iterable collection , if this general iterable collection has less than `n` elements.

    Definition Classes
      ParIterableLike → GenTraversableLike

33. #### def dropWhile(pred: ((K, V)) ⇒ Boolean): Repr

    Drops all elements in the longest prefix of elements that satisfy the predicate, and returns a collection composed of the remaining elements.

    Drops all elements in the longest prefix of elements that satisfy the predicate, and returns a collection composed of the remaining elements.

    This method will use `indexFlag` signalling capabilities. This means that splitters may set and read the `indexFlag` state. The index flag is initially set to maximum integer value.

    pred

      the predicate used to test the elements

    returns

      a collection composed of all the elements after the longest prefix of elements in this general iterable collection that satisfy the predicate `pred`

    Definition Classes
      ParIterableLike → GenTraversableLike

34. #### def ensuring(cond: (ParMapLike[K, V, Repr, Sequential]) ⇒ Boolean, msg: ⇒ Any): ParMapLike[K, V, Repr, Sequential]

    Implicit information
      This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to Ensuring[ParMapLike[K, V, Repr, Sequential]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

35. #### def ensuring(cond: (ParMapLike[K, V, Repr, Sequential]) ⇒ Boolean): ParMapLike[K, V, Repr, Sequential]

    Implicit information
      This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to Ensuring[ParMapLike[K, V, Repr, Sequential]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

36. #### def ensuring(cond: Boolean, msg: ⇒ Any): ParMapLike[K, V, Repr, Sequential]

    Implicit information
      This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to Ensuring[ParMapLike[K, V, Repr, Sequential]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

37. #### def ensuring(cond: Boolean): ParMapLike[K, V, Repr, Sequential]

    Implicit information
      This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to Ensuring[ParMapLike[K, V, Repr, Sequential]] performed by method Ensuring in scala.Predef.
    Definition Classes
      Ensuring

38. #### final def eq(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

39. #### def equals(that: Any): Boolean

    Compares two maps structurally; i.

    Compares two maps structurally; i.e. checks if all mappings contained in this map are also contained in the other map, and vice versa.

    that

      the other map

    returns

      `true` if both maps contain exactly the same mappings, `false` otherwise.

    Definition Classes
      GenMapLike → Equals → AnyRef → Any

40. #### def exists(pred: ((K, V)) ⇒ Boolean): Boolean

    Tests whether a predicate holds for some element of this general iterable collection .

    Tests whether a predicate holds for some element of this general iterable collection .

    This method will use `abort` signalling capabilities. This means that splitters may send and read `abort` signals.

    pred

      a predicate used to test elements

    returns

      true if `p` holds for some element, false otherwise

    Definition Classes
      ParIterableLike → GenTraversableOnce

41. #### def filter(pred: ((K, V)) ⇒ Boolean): Repr

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

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

    pred

      the predicate used to test elements.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableLike

42. #### def filterKeys(p: (K) ⇒ Boolean): parallel.ParMap[K, V]

    Filters this map by retaining only keys satisfying a predicate.

    Filters this map by retaining only keys satisfying a predicate.

    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.

    Definition Classes
      ParMapLike → GenMapLike

43. #### def filterNot(pred: ((K, V)) ⇒ Boolean): Repr

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

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

    pred

      the predicate used to test elements.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableLike

44. #### def finalize(): Unit

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

45. #### def find(pred: ((K, V)) ⇒ Boolean): Option[(K, V)]

    Finds some element in the collection for which the predicate holds, if such an element exists.

    Finds some element in the collection for which the predicate holds, if such an element exists. The element may not necessarily be the first such element in the iteration order.

    If there are multiple elements obeying the predicate, the choice is nondeterministic.

    This method will use `abort` signalling capabilities. This means that splitters may send and read `abort` signals.

    pred

      predicate used to test the elements

    returns

      an option value with the element if such an element exists, or `None` otherwise

    Definition Classes
      ParIterableLike → GenTraversableOnce

46. #### def flatMap[B](f: (A) ⇒ GenTraversableOnce[B]): Shrinkable[B]

    [use case] Builds a new collection by applying a function to all elements of this shrinkable collection and using the elements of the resulting collections.

    [use case]

    Builds a new collection by applying a function to all elements of this shrinkable 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 shrinkable 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 => word.toSeq)

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

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

    B

      the element type of the returned collection.

    f

      the function to apply to each element.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableLike
    Full Signature

    #### def flatMap[S, That](f: ((K, V)) ⇒ GenTraversableOnce[S])(implicit bf: CanBuildFrom[Repr, S, That]): That

47. #### def fold[U >: (K, V)](z: U)(op: (U, U) ⇒ U): U

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

    Folds the elements of this sequence using the specified associative binary operator. The order in which the elements are reduced is unspecified and may be nondeterministic.

    Note this method has a different signature than the `foldLeft` and `foldRight` methods of the trait `Traversable`. The result of folding may only be a supertype of this parallel collection's type parameter `T`.

    U

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

    z

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

    op

      a binary operator that must be associative

    returns

      the result of applying fold operator `op` between all the elements and `z`

    Definition Classes
      ParIterableLike → GenTraversableOnce

48. #### def foldLeft[S](z: S)(op: (S, (K, V)) ⇒ S): S

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

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

    Note: will not terminate for infinite-sized collections.

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

    z

      the start value.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this general iterable collection , going left to right with the start value `z` on the left:

          op(...op(z, x_1), x_2, ..., x_n)

      where `x1, ..., xn` are the elements of this general iterable collection .

    Definition Classes
      ParIterableLike → GenTraversableOnce

49. #### def foldRight[S](z: S)(op: ((K, V), S) ⇒ S): S

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

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

    Note: will not terminate for infinite-sized collections.

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

    z

      the start value.

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this general iterable collection , going right to left with the start value `z` on the right:

          op(x_1, op(x_2, ... op(x_n, z)...))

      where `x1, ..., xn` are the elements of this general iterable collection .

    Definition Classes
      ParIterableLike → GenTraversableOnce

50. #### def forall(pred: ((K, V)) ⇒ Boolean): Boolean

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

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

    This method will use `abort` signalling capabilities. This means that splitters may send and read `abort` signals.

    pred

      a predicate used to test elements

    returns

      true if `p` holds for all elements, false otherwise

    Definition Classes
      ParIterableLike → GenTraversableOnce

51. #### def foreach[U](f: ((K, V)) ⇒ U): Unit

    Applies a function `f` to all the elements of general iterable collection in an undefined order.

    Applies a function `f` to all the elements of general iterable collection in an undefined order.

    U

      the result type of the function applied to each element, which is always discarded

    f

      function applied to each element

    Definition Classes
      ParIterableLike → GenTraversableLike → GenTraversableOnce

52. #### def formatted(fmtstr: String): String

    Returns string formatted according to given `format` string.

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

    Implicit information
      This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to StringFormat[ParMapLike[K, V, Repr, Sequential]] performed by method StringFormat in scala.Predef.
    Definition Classes
      StringFormat
    Annotations
      @inline()

53. #### final def getClass(): Class[_]

    Definition Classes
      AnyRef → Any

54. #### def getOrElse(key: A, default: ⇒ B): B

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

    [use case]

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

    key

      the key.

    default

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

    returns

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

    Definition Classes
      ParMapLike → GenMapLike
    Full Signature

    #### def getOrElse[U >: V](key: K, default: ⇒ U): U

55. #### def groupBy[K](f: ((K, V)) ⇒ K): immutable.ParMap[K, Repr]

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

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

    Note: this method is not re-implemented by views. This means when applied to a view it will always force the view and return a new general iterable collection .

    K

      the type of keys returned by the discriminator function.

    f

      the discriminator function.

    returns

      A map from keys to general iterable collection s 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 general iterable collection of those elements `x` for which `f(x)` equals `k`.

    Definition Classes
      ParIterableLike → GenTraversableLike

56. #### def hasDefiniteSize: Boolean

    Definition Classes
      ParIterableLike → GenTraversableOnce

57. #### def hashCode(): Int

    Definition Classes
      GenMapLike → AnyRef → Any

58. #### def head: (K, V)

    Selects the first element of this general iterable collection .

    Selects the first element of this general iterable collection .

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

    returns

      the first element of this general iterable collection .

    Definition Classes
      ParIterableLike → GenTraversableLike
    Exceptions thrown
      `NoSuchElementException`

      if the general iterable collection is empty.

59. #### def headOption: Option[(K, V)]

    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 general iterable collection if it is nonempty, `None` if it is empty.

    Definition Classes
      ParIterableLike → GenTraversableLike

60. #### def init: Repr

    Selects all elements except the last.

    Selects all elements except the last.

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

    returns

      a general iterable collection consisting of all elements of this general iterable collection

      except the last one.

    Definition Classes
      ParIterableLike → GenTraversableLike
    Exceptions thrown
      `UnsupportedOperationException`

      if the general iterable collection is empty.

61. #### def initTaskSupport(): Unit

    Attributes
      protected
    Definition Classes
      ParIterableLike

62. #### 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`.

    key

      the key

    returns

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

    Definition Classes
      ParMapLike → GenMapLike

63. #### def isEmpty: Boolean

    Tests whether the general iterable collection is empty.

    Tests whether the general iterable collection is empty.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableOnce

64. #### final def isInstanceOf[T0]: Boolean

    Definition Classes
      Any

65. #### def isStrictSplitterCollection: Boolean

    Denotes whether this parallel collection has strict splitters.

    Denotes whether this parallel collection has strict splitters.

    This is true in general, and specific collection instances may choose to override this method. Such collections will fail to execute methods which rely on splitters being strict, i.e. returning a correct value in the `remaining` method.

    This method helps ensure that such failures occur on method invocations, rather than later on and in unpredictable ways.

    Definition Classes
      ParIterableLike

66. #### final def isTraversableAgain: Boolean

    Tests whether this general iterable collection can be repeatedly traversed.

    Tests whether this general iterable collection can be repeatedly traversed.

    returns

      `true`

    Definition Classes
      ParIterableLike → GenTraversableLike → GenTraversableOnce

67. #### def iterator: Splitter[(K, V)]

    Creates a new split iterator used to traverse the elements of this collection.

    Creates a new split iterator used to traverse the elements of this collection.

    By default, this method is implemented in terms of the protected `splitter` method.

    returns

      a split iterator

    Definition Classes
      ParIterableLike → GenIterableLike

68. #### def keySet: parallel.ParSet[K]

    Definition Classes
      ParMapLike → GenMapLike

69. #### def keys: parallel.ParIterable[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.

    Definition Classes
      ParMapLike → GenMapLike

70. #### def keysIterator: IterableSplitter[K]

    Creates an iterator for all keys.

    Creates an iterator for all keys.

    returns

      an iterator over all keys.

    Definition Classes
      ParMapLike → GenMapLike

71. #### def last: (K, V)

    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 general iterable collection .

    Definition Classes
      ParIterableLike → GenTraversableLike
    Exceptions thrown
      NoSuchElementException

      If the general iterable collection is empty.

72. #### def lastOption: Option[(K, V)]

    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 general iterable collection $ if it is nonempty, `None` if it is empty.

    Definition Classes
      ParIterableLike → GenTraversableLike

73. #### def map[B](f: (A) ⇒ B): Shrinkable[B]

    [use case] Builds a new collection by applying a function to all elements of this shrinkable collection.

    [use case]

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

    B

      the element type of the returned collection.

    f

      the function to apply to each element.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableLike
    Full Signature

    #### def map[S, That](f: ((K, V)) ⇒ S)(implicit bf: CanBuildFrom[Repr, S, That]): That

74. #### def mapValues[S](f: (V) ⇒ S): parallel.ParMap[K, S]

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

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

    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.

    Definition Classes
      ParMapLike → GenMapLike

75. #### def max: A

    [use case] Finds the largest element.

    [use case]

    Finds the largest element.

    returns

      the largest element of this shrinkable collection.

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Full Signature

    #### def max[U >: (K, V)](implicit ord: Ordering[U]): (K, V)

76. #### def maxBy[B](f: (A) ⇒ B): A

    [use case] Finds the first element which yields the largest value measured by function f.

    [use case]

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

    B

      The result type of the function f.

    f

      The measuring function.

    returns

      the first element of this shrinkable collection with the largest value measured by function f.

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Full Signature

    #### def maxBy[S](f: ((K, V)) ⇒ S)(implicit cmp: Ordering[S]): (K, V)

77. #### def min: A

    [use case] Finds the smallest element.

    [use case]

    Finds the smallest element.

    returns

      the smallest element of this shrinkable collection

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Full Signature

    #### def min[U >: (K, V)](implicit ord: Ordering[U]): (K, V)

78. #### def minBy[B](f: (A) ⇒ B): A

    [use case] Finds the first element which yields the smallest value measured by function f.

    [use case]

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

    B

      The result type of the function f.

    f

      The measuring function.

    returns

      the first element of this shrinkable collection with the smallest value measured by function f.

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Full Signature

    #### def minBy[S](f: ((K, V)) ⇒ S)(implicit cmp: Ordering[S]): (K, V)

79. #### def mkString: String

    Displays all elements of this general iterable collection in a string.

    Displays all elements of this general iterable collection in a string.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableOnce

80. #### def mkString(sep: String): String

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

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

    sep

      the separator string.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Example:

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

81. #### def mkString(start: String, sep: String, end: String): String

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

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

    start

      the starting string.

    sep

      the separator string.

    end

      the ending string.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Example:

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

82. #### final def ne(arg0: AnyRef): Boolean

    Definition Classes
      AnyRef

83. #### def nonEmpty: Boolean

    Tests whether the general iterable collection is not empty.

    Tests whether the general iterable collection is not empty.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableOnce

84. #### final def notify(): Unit

    Definition Classes
      AnyRef

85. #### final def notifyAll(): Unit

    Definition Classes
      AnyRef

86. #### def par: Repr

    Returns a parallel implementation of this collection.

    Returns a parallel implementation of this collection.

    For most collection types, this method creates a new parallel collection by copying all the elements. For these collection, `par` takes linear time. Mutable collections in this category do not produce a mutable parallel collection that has the same underlying dataset, so changes in one collection will not be reflected in the other one.

    Specific collections (e.g. `ParArray` or `mutable.ParHashMap`) override this default behaviour by creating a parallel collection which shares the same underlying dataset. For these collections, `par` takes constant or sublinear time.

    All parallel collections return a reference to themselves.

    returns

      a parallel implementation of this collection

    Definition Classes
      ParIterableLike → CustomParallelizable → Parallelizable

87. #### def parCombiner: Combiner[(K, V), Repr]

    The default `par` implementation uses the combiner provided by this method to create a new parallel collection.

    The default `par` implementation uses the combiner provided by this method to create a new parallel collection.

    returns

      a combiner for the parallel collection of type `ParRepr`

    Attributes
      protected[this]
    Definition Classes
      CustomParallelizable → Parallelizable

88. #### def partition(pred: ((K, V)) ⇒ Boolean): (Repr, Repr)

    Partitions this general iterable collection in two general iterable collection s according to a predicate.

    Partitions this general iterable collection in two general iterable collection s according to a predicate.

    pred

      the predicate on which to partition.

    returns

      a pair of general iterable collection s: the first general iterable collection consists of all elements that satisfy the predicate `p` and the second general iterable collection consists of all elements that don't. The relative order of the elements in the resulting general iterable collection s may not be preserved.

    Definition Classes
      ParIterableLike → GenTraversableLike

89. #### def product: A

    [use case] Multiplies up the elements of this collection.

    [use case]

    Multiplies up the elements of this collection.

    returns

      the product of all elements in this shrinkable collection of numbers of type `Int`. Instead of `Int`, any other type `T` with an implicit `Numeric[T]` implementation can be used as element type of the shrinkable collection and as result type of `product`. Examples of such types are: `Long`, `Float`, `Double`, `BigInt`.

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Full Signature

    #### def product[U >: (K, V)](implicit num: Numeric[U]): U

90. #### def reduce[U >: (K, V)](op: (U, U) ⇒ U): U

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

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

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

    Note this method has a different signature than the `reduceLeft` and `reduceRight` methods of the trait `Traversable`. The result of reducing may only be a supertype of this parallel collection's type parameter `T`.

    U

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

    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.

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Exceptions thrown
      UnsupportedOperationException

      if this general iterable collection is empty.

91. #### def reduceLeft[U >: (K, V)](op: (U, (K, V)) ⇒ U): U

    Definition Classes
      ParIterableLike

92. #### def reduceLeftOption[U >: (K, V)](op: (U, (K, V)) ⇒ U): Option[U]

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

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

    Note: will not terminate for infinite-sized collections.

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

    op

      the binary operator.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableOnce

93. #### def reduceOption[U >: (K, V)](op: (U, U) ⇒ U): Option[U]

    Optionally reduces the elements of this sequence using the specified associative binary operator.

    Optionally reduces the elements of this sequence using the specified associative binary operator.

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

    Note this method has a different signature than the `reduceLeftOption` and `reduceRightOption` methods of the trait `Traversable`. The result of reducing may only be a supertype of this parallel collection's type parameter `T`.

    U

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

    op

      A binary operator that must be associative.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableOnce

94. #### def reduceRight[U >: (K, V)](op: ((K, V), U) ⇒ U): U

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

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

    Note: will not terminate for infinite-sized collections.

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

    op

      the binary operator.

    returns

      the result of inserting `op` between consecutive elements of this general iterable collection , going right to left:

          op(x_1, op(x_2, ..., op(x_{n-1}, x_n)...))

      where `x1, ..., xn` are the elements of this general iterable collection .

    Definition Classes
      ParIterableLike → GenTraversableOnce
    Exceptions thrown
      `UnsupportedOperationException`

      if this general iterable collection is empty.

95. #### def reduceRightOption[U >: (K, V)](op: ((K, V), U) ⇒ U): Option[U]

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

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

    Note: will not terminate for infinite-sized collections.

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

    op

      the binary operator.

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableOnce

96. #### def repr: Repr

    Definition Classes
      ParIterableLike → GenTraversableLike

97. #### def reuse[S, That](oldc: Option[Combiner[S, That]], newc: Combiner[S, That]): Combiner[S, That]

    Optionally reuses an existing combiner for better performance.

    Optionally reuses an existing combiner for better performance. By default it doesn't - subclasses may override this behaviour. The provided combiner `oldc` that can potentially be reused will be either some combiner from the previous computational task, or `None` if there was no previous phase (in which case this method must return `newc`).

    oldc

      The combiner that is the result of the previous task, or `None` if there was no previous task.

    newc

      The new, empty combiner that can be used.

    returns

      Either `newc` or `oldc`.

    Attributes
      protected
    Definition Classes
      ParIterableLike

98. #### def sameElements(that: GenIterable[A]): Boolean

    [use case] Checks if the other iterable collection contains the same elements in the same order as this shrinkable collection.

    [use case]

    Checks if the other iterable collection contains the same elements in the same order as this shrinkable collection.

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

    Note: will not terminate for infinite-sized collections.

    that

      the collection to compare with.

    returns

      `true`, if both collections contain the same elements in the same order, `false` otherwise.

    Definition Classes
      ParIterableLike → GenIterableLike
    Full Signature

    #### def sameElements[U >: (K, V)](that: GenIterable[U]): Boolean

99. #### def scan(z: (K, V))(op: ((K, V), (K, V)) ⇒ (K, V)): Shrinkable[(K, V)]

    [use case] Computes a prefix scan of the elements of the collection.

    [use case]

    Computes a prefix scan of the elements of the collection.

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

    z

      neutral element for the operator `op`

    op

      the associative operator for the scan

    returns

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

    Definition Classes
      ParIterableLike → GenTraversableLike
    Full Signature

    #### def scan[U >: (K, V), That](z: U)(op: (U, U) ⇒ U)(implicit bf: CanBuildFrom[Repr, U, That]): That

100. #### def scanBlockSize: Int

     Attributes
       protected[this]
     Definition Classes
       ParIterableLike

101. #### def scanLeft[S, That](z: S)(op: (S, (K, V)) ⇒ S)(implicit bf: CanBuildFrom[Repr, S, That]): That

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

     Produces a collection containing cumulative results of applying the operator 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.

     That

       the actual type of the resulting collection

     z

       the initial value

     op

       the binary operator applied to the intermediate result and the element

     bf

       an implicit value of class `CanBuildFrom` which determines the result class `That` from the current representation type `Repr` and and the new element type `B`.

     returns

       collection with intermediate results

     Definition Classes
       ParIterableLike → GenTraversableLike

102. #### def scanRight[S, That](z: S)(op: ((K, V), S) ⇒ S)(implicit bf: CanBuildFrom[Repr, S, That]): That

     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.

     Example:

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

     That

       the actual type of the resulting collection

     z

       the initial value

     op

       the binary operator applied to the intermediate result and the element

     bf

       an implicit value of class `CanBuildFrom` which determines the result class `That` from the current representation type `Repr` and and the new element type `B`.

     returns

       collection with intermediate results

     Definition Classes
       ParIterableLike → GenTraversableLike

103. #### def sequentially[S, That <: Parallel](b: (Sequential) ⇒ Parallelizable[S, That]): Repr

     Attributes
       protected[this]
     Definition Classes
       ParIterableLike

104. #### def slice(unc_from: Int, unc_until: Int): Repr

     Selects an interval of elements.

     Selects an interval of elements. The returned 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.

     unc_from

       the lowest index to include from this general iterable collection .

     unc_until

       the lowest index to EXCLUDE from this general iterable collection .

     returns

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

     Definition Classes
       ParIterableLike → GenTraversableLike

105. #### def span(pred: ((K, V)) ⇒ Boolean): (Repr, Repr)

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

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

     This method will use `indexFlag` signalling capabilities. This means that splitters may set and read the `indexFlag` state. The index flag is initially set to maximum integer value.

     pred

       the predicate used to test the elements

     returns

       a pair consisting of the longest prefix of the collection for which all the elements satisfy `pred`, and the rest of the collection

     Definition Classes
       ParIterableLike → GenTraversableLike

106. #### def splitAt(n: Int): (Repr, Repr)

     Splits this general iterable collection into two at a given position.

     Splits this general iterable collection into two at a given position. Note: `c splitAt n` is equivalent to (but possibly more efficient than) `(c take n, c drop n)`.

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

     n

       the position at which to split.

     returns

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

     Definition Classes
       ParIterableLike → GenTraversableLike

107. #### def sum: A

     [use case] Sums up the elements of this collection.

     [use case]

     Sums up the elements of this collection.

     returns

       the sum of all elements in this shrinkable collection of numbers of type `Int`. Instead of `Int`, any other type `T` with an implicit `Numeric[T]` implementation can be used as element type of the shrinkable collection and as result type of `sum`. Examples of such types are: `Long`, `Float`, `Double`, `BigInt`.

     Definition Classes
       ParIterableLike → GenTraversableOnce
     Full Signature

     #### def sum[U >: (K, V)](implicit num: Numeric[U]): U

108. #### final def synchronized[T0](arg0: ⇒ T0): T0

     Definition Classes
       AnyRef

109. #### def tail: Repr

     Selects all elements except the first.

     Selects all elements except the first.

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

     returns

       a general iterable collection consisting of all elements of this general iterable collection

       except the first one.

     Definition Classes
       ParIterableLike → GenTraversableLike
     Exceptions thrown
       `UnsupportedOperationException`

       if the general iterable collection is empty.

110. #### def take(n: Int): Repr

     Selects first n elements.

     Selects first n elements.

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

     n

       the number of elements to take from this general iterable collection .

     returns

       a general iterable collection consisting only of the first `n` elements of this general iterable collection , or else the whole general iterable collection , if it has less than `n` elements.

     Definition Classes
       ParIterableLike → GenTraversableLike

111. #### def takeWhile(pred: ((K, V)) ⇒ Boolean): Repr

     Takes the longest prefix of elements that satisfy the predicate.

     Takes the longest prefix of elements that satisfy the predicate.

     This method will use `indexFlag` signalling capabilities. This means that splitters may set and read the `indexFlag` state. The index flag is initially set to maximum integer value.

     pred

       the predicate used to test the elements

     returns

       the longest prefix of this general iterable collection of elements that satisy the predicate `pred`

     Definition Classes
       ParIterableLike → GenTraversableLike

112. #### implicit def task2ops[R, Tp](tsk: SSCTask[R, Tp]): TaskOps[R, Tp]

     Attributes
       protected
     Definition Classes
       ParIterableLike

113. #### def tasksupport: TaskSupport

     The task support object which is responsible for scheduling and load-balancing tasks to processors.

     The task support object which is responsible for scheduling and load-balancing tasks to processors.

     Definition Classes
       ParIterableLike
     See also

       scala.collection.parallel.TaskSupport

114. #### def tasksupport_=(ts: TaskSupport): Unit

     Changes the task support object which is responsible for scheduling and load-balancing tasks to processors.

     Changes the task support object which is responsible for scheduling and load-balancing tasks to processors.

     A task support object can be changed in a parallel collection after it has been created, but only during a quiescent period, i.e. while there are no concurrent invocations to parallel collection methods.

     Here is a way to change the task support of a parallel collection:

         import scala.collection.parallel._
         val pc = mutable.ParArray(1, 2, 3)
         pc.tasksupport = new ForkJoinTaskSupport(
           new scala.concurrent.forkjoin.ForkJoinPool(2))

     Definition Classes
       ParIterableLike
     See also

       scala.collection.parallel.TaskSupport

115. #### def to[Col[_]]: Col[A]

     [use case] Converts this shrinkable collection into another by copying all elements.

     [use case]

     Converts this shrinkable collection into another by copying all elements.

     Note: will not terminate for infinite-sized collections.

     Col

       The collection type to build.

     returns

       a new collection containing all elements of this shrinkable collection.

     Definition Classes
       ParIterableLike → GenTraversableOnce
     Full Signature

     #### def to[Col[_]](implicit cbf: CanBuildFrom[Nothing, (K, V), Col[(K, V)]]): Col[(K, V)]

116. #### def toArray: Array[A]

     [use case] Converts this shrinkable collection to an array.

     [use case]

     Converts this shrinkable collection to an array.

     Note: will not terminate for infinite-sized collections.

     returns

       an array containing all elements of this shrinkable collection. An `ClassTag` must be available for the element type of this shrinkable collection.

     Definition Classes
       ParIterableLike → GenTraversableOnce
     Full Signature

     #### def toArray[U >: (K, V)](implicit arg0: ClassTag[U]): Array[U]

117. #### def toBuffer[U >: (K, V)]: Buffer[U]

     Uses the contents of this general iterable collection to create a new mutable buffer.

     Uses the contents of this general iterable collection to create a new mutable buffer.

     Note: will not terminate for infinite-sized collections.

     returns

       a buffer containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

118. #### def toIndexedSeq: immutable.IndexedSeq[(K, V)]

     Converts this general iterable collection to an indexed sequence.

     Converts this general iterable collection to an indexed sequence.

     Note: will not terminate for infinite-sized collections.

     returns

       an indexed sequence containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

119. #### def toIterable: parallel.ParIterable[(K, V)]

     Converts this general iterable collection to an iterable collection.

     Converts this general iterable collection to an iterable collection. Note that the choice of target `Iterable` is lazy in this default implementation as this `TraversableOnce` may be lazy and unevaluated (i.e. it may be an iterator which is only traversable once).

     Note: will not terminate for infinite-sized collections.

     returns

       an `Iterable` containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

120. #### def toIterator: scala.Iterator[(K, V)]

     Returns an Iterator over the elements in this general iterable collection .

     Returns an Iterator over the elements in this general iterable collection . Will return the same Iterator if this instance is already an Iterator.

     Note: will not terminate for infinite-sized collections.

     returns

       an Iterator containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

121. #### def toList: List[(K, V)]

     Converts this general iterable collection to a list.

     Converts this general iterable collection to a list.

     Note: will not terminate for infinite-sized collections.

     returns

       a list containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

122. #### def toMap[T, U]: collection.Map[T, U]

     [use case] Converts this shrinkable collection to a map.

     [use case]

     Converts this shrinkable collection to a map. This method is unavailable unless the elements are members of Tuple2, each ((T, U)) becoming a key-value pair in the map. Duplicate keys will be overwritten by later keys: if this is an unordered collection, which key is in the resulting map is undefined.

     Note: will not terminate for infinite-sized collections.

     returns

       a map of type `immutable.Map[T, U]` containing all key/value pairs of type `(T, U)` of this shrinkable collection.

     Definition Classes
       ParIterableLike → GenTraversableOnce
     Full Signature

     #### def toMap[K, V](implicit ev: <:<[(K, V), (K, V)]): immutable.ParMap[K, V]

123. #### def toParArray: ParArray[T]

     Implicit information
       This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to CollectionsHaveToParArray[ParMapLike[K, V, Repr, Sequential], T] performed by method CollectionsHaveToParArray in scala.collection.parallel. This conversion will take place only if an implicit value of type (ParMapLike[K, V, Repr, Sequential]) ⇒ GenTraversableOnce[T] is in scope.
     Definition Classes
       CollectionsHaveToParArray

124. #### def toParCollection[U >: (K, V), That](cbf: () ⇒ Combiner[U, That]): That

     Attributes
       protected
     Definition Classes
       ParIterableLike

125. #### def toParMap[K, V, That](cbf: () ⇒ Combiner[(K, V), That])(implicit ev: <:<[(K, V), (K, V)]): That

     Attributes
       protected
     Definition Classes
       ParIterableLike

126. #### def toSeq: parallel.ParSeq[(K, V)]

     Converts this general iterable collection to a sequence.

     Converts this general iterable collection to a sequence. As with `toIterable`, it's lazy in this default implementation, as this `TraversableOnce` may be lazy and unevaluated.

     Note: will not terminate for infinite-sized collections.

     returns

       a sequence containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

127. #### def toSet[U >: (K, V)]: immutable.ParSet[U]

     Converts this general iterable collection to a set.

     Converts this general iterable collection to a set.

     Note: will not terminate for infinite-sized collections.

     returns

       a set containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

128. #### def toStream: Stream[(K, V)]

     Converts this general iterable collection to a stream.

     Converts this general iterable collection to a stream.

     returns

       a stream containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

129. #### def toString(): String

     Definition Classes
       ParIterableLike → AnyRef → Any

130. #### def toTraversable: GenTraversable[(K, V)]

     Converts this general iterable collection to an unspecified Traversable.

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

     Note: will not terminate for infinite-sized collections.

     returns

       a Traversable containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

131. #### def toVector: Vector[(K, V)]

     Converts this general iterable collection to a Vector.

     Converts this general iterable collection to a Vector.

     Note: will not terminate for infinite-sized collections.

     returns

       a vector containing all elements of this general iterable collection .

     Definition Classes
       ParIterableLike → GenTraversableOnce

132. #### def values: parallel.ParIterable[V]

     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.

     Definition Classes
       ParMapLike → GenMapLike

133. #### def valuesIterator: IterableSplitter[V]

     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.

     Definition Classes
       ParMapLike → GenMapLike

134. #### final def wait(): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

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

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

136. #### final def wait(arg0: Long): Unit

     Definition Classes
       AnyRef
     Annotations
       @throws( ... )

137. #### def withFilter(pred: ((K, V)) ⇒ Boolean): Repr

     Definition Classes
       ParIterableLike

138. #### def wrap[R](body: ⇒ R): NonDivisible[R]

     Attributes
       protected
     Definition Classes
       ParIterableLike

139. #### def zip[B](that: GenIterable[B]): Shrinkable[(A, B)]

     [use case] Returns a shrinkable collection formed from this shrinkable collection and another iterable collection by combining corresponding elements in pairs.

     [use case]

     Returns a shrinkable collection formed from this shrinkable 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.

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

     B

       the type of the second half of the returned pairs

     that

       The iterable providing the second half of each result pair

     returns

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

     Definition Classes
       ParIterableLike → GenIterableLike
     Full Signature

     #### def zip[U >: (K, V), S, That](that: GenIterable[S])(implicit bf: CanBuildFrom[Repr, (U, S), That]): That

140. #### def zipAll[B](that: Iterable[B], thisElem: A, thatElem: B): Shrinkable[(A, B)]

     [use case] Returns a shrinkable collection formed from this shrinkable collection and another iterable collection by combining corresponding elements in pairs.

     [use case]

     Returns a shrinkable collection formed from this shrinkable 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.

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

     B

       the type of the second half of the returned pairs

     that

       The iterable providing the second half of each result pair

     thisElem

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

     thatElem

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

     returns

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

     Definition Classes
       ParIterableLike → GenIterableLike
     Full Signature

     #### def zipAll[S, U >: (K, V), That](that: GenIterable[S], thisElem: U, thatElem: S)(implicit bf: CanBuildFrom[Repr, (U, S), That]): That

141. #### def zipWithIndex: Shrinkable[(A, Int)]

     [use case] Zips this shrinkable collection with its indices.

     [use case]

     Zips this shrinkable collection with its indices.

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

     returns

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

     Definition Classes
       ParIterableLike → GenIterableLike
     Full Signature

     #### def zipWithIndex[U >: (K, V), That](implicit bf: CanBuildFrom[Repr, (U, Int), That]): That

     Example:

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

142. #### def →[B](y: B): (ParMapLike[K, V, Repr, Sequential], B)

     Implicit information
       This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to ArrowAssoc[ParMapLike[K, V, Repr, Sequential]] performed by method ArrowAssoc in scala.Predef.
     Definition Classes
       ArrowAssoc

### Shadowed Implicit Value Members

1. #### def +(other: String): String

   Implicit information
     This member is added by an implicit conversion from ParMapLike[K, V, Repr, Sequential] to any2stringadd[ParMapLike[K, V, Repr, Sequential]] performed by method any2stringadd in scala.Predef.
   Shadowing
     This implicitly inherited member is shadowed by one or more members in this class.
     To access this member you can use a type ascription:

         (parMapLike: any2stringadd[ParMapLike[K, V, Repr, Sequential]]).+(other)

   Definition Classes
     any2stringadd

### Deprecated Value Members

1. #### def view: IterableView[(K, V), Sequential]

   Definition Classes
     ParIterableLike
   Annotations
     @deprecated
   Deprecated

     (Since version 2.11.0) Use .seq.view instead

### Inherited from mutable.Cloneable[Repr]

### Inherited from Cloneable

### Inherited from java.lang.Cloneable

### Inherited from Shrinkable[K]

### Inherited from Growable[(K, V)]

### Inherited from Clearable

### Inherited from parallel.ParMapLike[K, V, Repr, Sequential]

### Inherited from ParIterableLike[(K, V), Repr, Sequential]

### Inherited from HasNewCombiner[(K, V), Repr]

### Inherited from Parallel

### Inherited from CustomParallelizable[(K, V), Repr]

### Inherited from GenMapLike[K, V, Repr]

### Inherited from Equals

### Inherited from GenIterableLike[(K, V), Repr]

### Inherited from GenTraversableLike[(K, V), Repr]

### Inherited from Parallelizable[(K, V), Repr]

### Inherited from GenTraversableOnce[(K, V)]

### Inherited from AnyRef

### Inherited from Any

### Inherited by implicit conversion CollectionsHaveToParArray from ParMapLike[K, V, Repr, Sequential] to CollectionsHaveToParArray[ParMapLike[K, V, Repr, Sequential], T]

### Inherited by implicit conversion any2stringadd from ParMapLike[K, V, Repr, Sequential] to any2stringadd[ParMapLike[K, V, Repr, Sequential]]

### Inherited by implicit conversion StringFormat from ParMapLike[K, V, Repr, Sequential] to StringFormat[ParMapLike[K, V, Repr, Sequential]]

### Inherited by implicit conversion Ensuring from ParMapLike[K, V, Repr, Sequential] to Ensuring[ParMapLike[K, V, Repr, Sequential]]

### Inherited by implicit conversion ArrowAssoc from ParMapLike[K, V, Repr, Sequential] to ArrowAssoc[ParMapLike[K, V, Repr, Sequential]]

### Ungrouped