scala.collection.mutable.ArraySeq

object ArraySeq extends SeqFactory[ArraySeq] with Serializable

This object provides a set of operations to create ArraySeq values.

Type Members

type Coll = ArraySeq[_]

The underlying collection type with unknown element type

  • Attributes
    • protected[this]
  • Definition Classes
    • GenericCompanion

class GenericCanBuildFrom[A] extends CanBuildFrom[CC[_], A, CC[A]]

A generic implementation of the CanBuildFrom trait, which forwards all calls to apply(from) to the genericBuilder method of collection from , and which forwards all calls of apply() to the newBuilder method of this factory.

  • Definition Classes
    • GenTraversableFactory

Value Members From scala.collection.generic.GenTraversableFactory

def ReusableCBF: GenericCanBuildFrom[Nothing]

  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def concat[A](xss: collection.Traversable[A]*): ArraySeq[A]

Concatenates all argument collections into a single collection.

  • xss
    • the collections that are to be concatenated.
  • returns
    • the concatenation of all the collections.
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def fill[A](n: Int)(elem: ⇒ A): ArraySeq[A]

Produces a collection containing the results of some element computation a number of times.

  • n
    • the number of elements contained in the collection.
  • elem
    • the element computation
  • returns
    • A collection that contains the results of n evaluations of elem .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def fill[A](n1: Int, n2: Int)(elem: ⇒ A): ArraySeq[ArraySeq[A]]

Produces a two-dimensional collection containing the results of some element computation a number of times.

  • n1
    • the number of elements in the 1st dimension
  • n2
    • the number of elements in the 2nd dimension
  • elem
    • the element computation
  • returns
    • A collection that contains the results of n1 x n2 evaluations of elem .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def fill[A](n1: Int, n2: Int, n3: Int)(elem: ⇒ A): ArraySeq[ArraySeq[ArraySeq[A]]]

Produces a three-dimensional collection containing the results of some element computation a number of times.

  • n1
    • the number of elements in the 1st dimension
  • n2
    • the number of elements in the 2nd dimension
  • n3
    • the number of elements in the 3nd dimension
  • elem
    • the element computation
  • returns
    • A collection that contains the results of n1 x n2 x n3 evaluations of elem .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def fill[A](n1: Int, n2: Int, n3: Int, n4: Int)(elem: ⇒ A): ArraySeq[ArraySeq[ArraySeq[ArraySeq[A]]]]

Produces a four-dimensional collection containing the results of some element computation a number of times.

  • n1
    • the number of elements in the 1st dimension
  • n2
    • the number of elements in the 2nd dimension
  • n3
    • the number of elements in the 3nd dimension
  • n4
    • the number of elements in the 4th dimension
  • elem
    • the element computation
  • returns
    • A collection that contains the results of n1 x n2 x n3 x n4 evaluations of elem .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def fill[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: ⇒ A): ArraySeq[ArraySeq[ArraySeq[ArraySeq[ArraySeq[A]]]]]

Produces a five-dimensional collection containing the results of some element computation a number of times.

  • n1
    • the number of elements in the 1st dimension
  • n2
    • the number of elements in the 2nd dimension
  • n3
    • the number of elements in the 3nd dimension
  • n4
    • the number of elements in the 4th dimension
  • n5
    • the number of elements in the 5th dimension
  • elem
    • the element computation
  • returns
    • A collection that contains the results of n1 x n2 x n3 x n4 x n5 evaluations of elem .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def iterate[A](start: A, len: Int)(f: (A) ⇒ A): ArraySeq[A]

Produces a collection containing repeated applications of a function to a start value.

  • start
    • the start value of the collection
  • len
    • the number of elements contained inthe collection
  • f
    • the function that’s repeatedly applied
  • returns
    • a collection with len values in the sequence start, f(start), f(f(start)), ...
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def range[T](start: T, end: T)(implicit arg0: Integral[T]): ArraySeq[T]

Produces a collection containing a sequence of increasing of integers.

  • start
    • the first element of the collection
  • end
    • the end value of the collection (the first value NOT contained)
  • returns
    • a collection with values start, start + 1, ..., end - 1
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def range[T](start: T, end: T, step: T)(implicit arg0: Integral[T]): ArraySeq[T]

Produces a collection containing equally spaced values in some integer interval.

  • start
    • the start value of the collection
  • end
    • the end value of the collection (the first value NOT contained)
  • step
    • the difference between successive elements of the collection (must be positive or negative)
  • returns
    • a collection with values start, start + step, ... up to, but excluding end
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def tabulate[A](n: Int)(f: (Int) ⇒ A): ArraySeq[A]

Produces a collection containing values of a given function over a range of integer values starting from 0.

  • n
    • The number of elements in the collection
  • f
    • The function computing element values
  • returns
    • A collection consisting of elements f(0), ..., f(n -1)
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def tabulate[A](n1: Int, n2: Int)(f: (Int, Int) ⇒ A): ArraySeq[ArraySeq[A]]

Produces a two-dimensional collection containing values of a given function over ranges of integer values starting from 0.

  • n1
    • the number of elements in the 1st dimension
  • n2
    • the number of elements in the 2nd dimension
  • f
    • The function computing element values
  • returns
    • A collection consisting of elements f(i1, i2) for 0 <= i1 < n1 and 0 <= i2 < n2 .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def tabulate[A](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) ⇒ A): ArraySeq[ArraySeq[ArraySeq[A]]]

Produces a three-dimensional collection containing values of a given function over ranges of integer values starting from 0.

  • n1
    • the number of elements in the 1st dimension
  • n2
    • the number of elements in the 2nd dimension
  • n3
    • the number of elements in the 3nd dimension
  • f
    • The function computing element values
  • returns
    • A collection consisting of elements f(i1, i2, i3) for 0 <= i1 < n1 , 0 <= i2 < n2 , and 0 <= i3 < n3 .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) ⇒ A): ArraySeq[ArraySeq[ArraySeq[ArraySeq[A]]]]

Produces a four-dimensional collection containing values of a given function over ranges of integer values starting from 0.

  • n1
    • the number of elements in the 1st dimension
  • n2
    • the number of elements in the 2nd dimension
  • n3
    • the number of elements in the 3nd dimension
  • n4
    • the number of elements in the 4th dimension
  • f
    • The function computing element values
  • returns
    • A collection consisting of elements f(i1, i2, i3, i4) for 0 <= i1 < n1 , 0 <= i2 < n2 , 0 <= i3 < n3 , and 0 <= i4 < n4 .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) ⇒ A): ArraySeq[ArraySeq[ArraySeq[ArraySeq[ArraySeq[A]]]]]

Produces a five-dimensional collection containing values of a given function over ranges of integer values starting from 0.

  • n1
    • the number of elements in the 1st dimension
  • n2
    • the number of elements in the 2nd dimension
  • n3
    • the number of elements in the 3nd dimension
  • n4
    • the number of elements in the 4th dimension
  • n5
    • the number of elements in the 5th dimension
  • f
    • The function computing element values
  • returns
    • A collection consisting of elements f(i1, i2, i3, i4, i5) for 0 <= i1 < n1 , 0 <= i2 < n2 , 0 <= i3 < n3 , 0 <= i4 < n4 , and 0 <= i5 < n5 .
  • Definition Classes
    • GenTraversableFactory

(defined at scala.collection.generic.GenTraversableFactory)

Value Members From scala.collection.generic.GenericCompanion

def apply[A](elems: A*): ArraySeq[A]

Creates a collection with the specified elements.

  • A
    • the type of the collection’s elements
  • elems
    • the elements of the created collection
  • returns
    • a new collection with elements elems
  • Definition Classes
    • GenericCompanion

(defined at scala.collection.generic.GenericCompanion)

def empty[A]: ArraySeq[A]

An empty collection of type CC[A]

  • A
    • the type of the collection’s elements
  • Definition Classes
    • GenericCompanion

(defined at scala.collection.generic.GenericCompanion)

Value Members From scala.collection.generic.SeqFactory

def unapplySeq[A](x: ArraySeq[A]): Some[ArraySeq[A]]

This method is called in a pattern match { case Seq(…) => }.

  • x
    • the selector value
  • returns
    • sequence wrapped in an option, if this is a Seq, otherwise none
  • Definition Classes
    • SeqFactory

(defined at scala.collection.generic.SeqFactory)

Value Members From scala.collection.mutable.ArraySeq

implicit def canBuildFrom[A]: CanBuildFrom[Coll, A, ArraySeq[A]]

The standard CanBuildFrom instance for ArraySeq objects. The created value is an instance of class GenericCanBuildFrom , which forwards calls to create a new builder to the genericBuilder method of the requesting collection.

(defined at scala.collection.mutable.ArraySeq)

def newBuilder[A]: Builder[A, ArraySeq[A]]

The default builder for ArraySeq objects.

  • A
    • the type of the array sequence’s elements
  • Definition Classes
    • ArraySeq → GenericCompanion (defined at scala.collection.mutable.ArraySeq)

Full Source:

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */



package scala
package collection
package mutable

import generic._
import parallel.mutable.ParArray

/** A class for polymorphic arrays of elements that's represented
 *  internally by an array of objects. This means that elements of
 *  primitive types are boxed.
 *
 *  @author Martin Odersky
 *  @version 2.8
 *  @since   2.8
 *  @see [[http://docs.scala-lang.org/overviews/collections/concrete-mutable-collection-classes.html#array_sequences "Scala's Collection Library overview"]]
 *  section on `Array Sequences` for more information.
 *
 *  @tparam A      type of the elements contained in this array sequence.
 *  @param length  the length of the underlying array.
 *
 *  @define Coll `ArraySeq`
 *  @define coll array sequence
 *  @define thatinfo the class of the returned collection. In the standard library configuration,
 *    `That` is always `ArraySeq[B]` because an implicit of type `CanBuildFrom[ArraySeq, B, ArraySeq[B]]`
 *    is defined in object `ArraySeq`.
 *  @define bfinfo an implicit value of class `CanBuildFrom` which determines the
 *    result class `That` from the current representation type `Repr`
 *    and the new element type `B`. This is usually the `canBuildFrom` value
 *    defined in object `ArraySeq`.
 *  @define orderDependent
 *  @define orderDependentFold
 *  @define mayNotTerminateInf
 *  @define willNotTerminateInf
 */
@SerialVersionUID(1530165946227428979L)
class ArraySeq[A](override val length: Int)
extends AbstractSeq[A]
   with IndexedSeq[A]
   with GenericTraversableTemplate[A, ArraySeq]
   with IndexedSeqOptimized[A, ArraySeq[A]]
   with CustomParallelizable[A, ParArray[A]]
   with Serializable
{

  override def companion: GenericCompanion[ArraySeq] = ArraySeq

  val array: Array[AnyRef] = new Array[AnyRef](length)

  override def par = ParArray.handoff(array.asInstanceOf[Array[A]], length)

  def apply(idx: Int): A = {
    if (idx >= length) throw new IndexOutOfBoundsException(idx.toString)
    array(idx).asInstanceOf[A]
  }

  def update(idx: Int, elem: A) {
    if (idx >= length) throw new IndexOutOfBoundsException(idx.toString)
    array(idx) = elem.asInstanceOf[AnyRef]
  }

  override def foreach[U](f: A => U) {
    var i = 0
    while (i < length) {
      f(array(i).asInstanceOf[A])
      i += 1
    }
  }

  /** Fills the given array `xs` with at most `len` elements of
   *  this traversable starting at position `start`.
   *  Copying will stop once either the end of the current traversable is reached or
   *  `len` elements have been copied or the end of the array is reached.
   *
   *  @param  xs the array to fill.
   *  @param  start starting index.
   *  @param  len number of elements to copy
   */
  override def copyToArray[B >: A](xs: Array[B], start: Int, len: Int) {
    val len1 = len min (xs.length - start) min length
    if (len1 > 0) Array.copy(array, 0, xs, start, len1)
  }

  override def clone(): ArraySeq[A] = {
    val cloned = array.clone().asInstanceOf[Array[AnyRef]]
    new ArraySeq[A](length) {
      override val array = cloned
    }
  }

}

/** $factoryInfo
 *  @define coll array sequence
 *  @define Coll `ArraySeq`
 */
object ArraySeq extends SeqFactory[ArraySeq] {
  /** $genericCanBuildFromInfo */
  implicit def canBuildFrom[A]: CanBuildFrom[Coll, A, ArraySeq[A]] = ReusableCBF.asInstanceOf[GenericCanBuildFrom[A]]
  def newBuilder[A]: Builder[A, ArraySeq[A]] =
    new ArrayBuffer[A] mapResult { buf =>
      val result = new ArraySeq[A](buf.length)
      buf.copyToArray(result.array.asInstanceOf[Array[Any]], 0)
      result
    }
}