Scala 3/scala.collection.mutable/ArrayBuffer

ArrayBuffer

@SerialVersionUID(3L)
object ArrayBuffer extends StrictOptimizedSeqFactory[ArrayBuffer]

Factory object for the ArrayBuffer class.

This object provides a set of operations to create mutable.ArrayBuffer values.

Companion:
class
Source:
ArrayBuffer.scala
class Object
trait Matchable
class Any

Value members

Concrete methods

def from[B](coll: IterableOnce[B]): ArrayBuffer[B]

Inherited methods

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

Creates a collection with the specified elements.

Creates a collection with the specified elements.

Type parameters:
A

the type of the collection's elements

Value parameters:
elems

the elements of the created collection

Returns:

a new collection with elements elems

Inherited from:
IterableFactory
Source:
Factory.scala
override def concat[A](xss: Iterable[A]*): ArrayBuffer[A]
override def fill[A](n: Int)(elem: => A): ArrayBuffer[A]
def fill[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]]]

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

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

Value parameters:
elem

the element computation

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 3rd dimension

n4

the number of elements in the 4th dimension

n5

the number of elements in the 5th dimension

Returns:

A collection that contains the results of n1 x n2 x n3 x n4 x n5 evaluations of elem.

Inherited from:
IterableFactory
Source:
Factory.scala
def fill[A](n1: Int, n2: Int, n3: Int, n4: Int)(elem: => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]]

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

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

Value parameters:
elem

the element computation

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 3rd dimension

n4

the number of elements in the 4th dimension

Returns:

A collection that contains the results of n1 x n2 x n3 x n4 evaluations of elem.

Inherited from:
IterableFactory
Source:
Factory.scala
def fill[A](n1: Int, n2: Int, n3: Int)(elem: => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]

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

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

Value parameters:
elem

the element computation

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 3rd dimension

Returns:

A collection that contains the results of n1 x n2 x n3 evaluations of elem.

Inherited from:
IterableFactory
Source:
Factory.scala
def fill[A](n1: Int, n2: Int)(elem: => A): ArrayBuffer[ArrayBuffer[A]]

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

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

Value parameters:
elem

the element computation

n1

the number of elements in the 1st dimension

n2

the number of elements in the 2nd dimension

Returns:

A collection that contains the results of n1 x n2 evaluations of elem.

Inherited from:
IterableFactory
Source:
Factory.scala
def iterate[A](start: A, len: Int)(f: A => A): ArrayBuffer[A]

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

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

Value parameters:
f

the function that's repeatedly applied

len

the number of elements contained in the collection

start

the start value of the collection

Returns:

a collection with len values in the sequence start, f(start), f(f(start)), ...

Inherited from:
IterableFactory
Source:
Factory.scala
def range[A : Integral](start: A, end: A, step: A): ArrayBuffer[A]

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

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

Value parameters:
end

the end value of the collection (the first value NOT contained)

start

the start value of the collection

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

Inherited from:
IterableFactory
Source:
Factory.scala
def range[A : Integral](start: A, end: A): ArrayBuffer[A]

Produces a collection containing a sequence of increasing of integers.

Produces a collection containing a sequence of increasing of integers.

Value parameters:
end

the end value of the collection (the first value NOT contained)

start

the first element of the collection

Returns:

a collection with values start, start + 1, ..., end - 1

Inherited from:
IterableFactory
Source:
Factory.scala
override def tabulate[A](n: Int)(f: Int => A): ArrayBuffer[A]
def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]]]

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

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

Value parameters:
f

The function computing element values

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 3rd dimension

n4

the number of elements in the 4th dimension

n5

the number of elements in the 5th dimension

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.

Inherited from:
IterableFactory
Source:
Factory.scala
def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]]

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

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

Value parameters:
f

The function computing element values

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 3rd dimension

n4

the number of elements in the 4th dimension

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.

Inherited from:
IterableFactory
Source:
Factory.scala
def tabulate[A](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) => A): ArrayBuffer[ArrayBuffer[ArrayBuffer[A]]]

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

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

Value parameters:
f

The function computing element values

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 3rd dimension

Returns:

A collection consisting of elements f(i1, i2, i3) for 0 <= i1 < n1, 0 <= i2 < n2, and 0 <= i3 < n3.

Inherited from:
IterableFactory
Source:
Factory.scala
def tabulate[A](n1: Int, n2: Int)(f: (Int, Int) => A): ArrayBuffer[ArrayBuffer[A]]

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

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

Value parameters:
f

The function computing element values

n1

the number of elements in the 1st dimension

n2

the number of elements in the 2nd dimension

Returns:

A collection consisting of elements f(i1, i2) for 0 <= i1 < n1 and 0 <= i2 < n2.

Inherited from:
IterableFactory
Source:
Factory.scala
final def unapplySeq[A](x: ArrayBuffer[A]): UnapplySeqWrapper[A]
Inherited from:
SeqFactory
Source:
Factory.scala
def unfold[A, S](init: S)(f: S => Option[(A, S)]): ArrayBuffer[A]

Produces a collection that uses a function f to produce elements of type A and update an internal state of type S.

Produces a collection that uses a function f to produce elements of type A and update an internal state of type S.

Type parameters:
A

Type of the elements

S

Type of the internal state

Value parameters:
f

Computes the next element (or returns None to signal the end of the collection)

init

State initial value

Returns:

a collection that produces elements using f until f returns None

Inherited from:
IterableFactory
Source:
Factory.scala

Concrete fields

Implicits

Inherited implicits

implicit def iterableFactory[A]: Factory[A, ArrayBuffer[A]]
Inherited from:
IterableFactory
Source:
Factory.scala