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Scala 3/scala/scala.collection/scala.collection.mutable/ArrayBuffer

ArrayBuffer

scala.collection.mutable.ArrayBuffer
See theArrayBuffer companion class
object ArrayBuffer extends StrictOptimizedSeqFactory[ArrayBuffer]

Factory object for the ArrayBuffer class.

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

Attributes

Companion
class
Source
ArrayBuffer.scala
Graph
Supertypes
trait Pure
trait Serializable
class Object
trait Matchable
class Any
Show all
Self type

Members list

Value members

Concrete methods

def empty[A]: ArrayBuffer[A]

An empty array buffer.

An empty array buffer.

Type parameters

A

the type of the array buffer's elements

Attributes

Returns

an empty array buffer of type CC[A]

Source
ArrayBuffer.scala
def from[B](coll: IterableOnce[B]^): ArrayBuffer[B]

Creates a target array buffer from an existing source collection

Creates a target array buffer from an existing source collection

Type parameters

A

the type of the collection’s elements

Value parameters

source

Source collection

Attributes

Returns

a new array buffer with the elements of source

Source
ArrayBuffer.scala
def newBuilder[A]: Builder[A, ArrayBuffer[A]]

Type parameters

A

the type of the array buffer’s elements

Attributes

Returns

a builder for mutable.ArrayBuffer objects.

Source
ArrayBuffer.scala

Inherited methods

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

Creates a array buffer with the specified elements.

Creates a array buffer with the specified elements.

Type parameters

A

the type of the array buffer's elements

Value parameters

elems

the elements of the created array buffer

Attributes

Returns

a new array buffer with elements elems

Inherited from:
IterableFactory
Source
Factory.scala
override def concat[A](xss: Iterable[A]*): ArrayBuffer[A]

Concatenates all argument collections into a single array buffer.

Concatenates all argument collections into a single array buffer.

Type parameters

A

the element type of the array buffer

Value parameters

xss

the collections that are to be concatenated.

Attributes

Returns

the concatenation of all the collections.

Definition Classes
Inherited from:
StrictOptimizedSeqFactory
Source
Factory.scala
override def fill[A](n: Int)(elem: => A): ArrayBuffer[A]

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

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

Type parameters

A

the element type of the array buffer

Value parameters

elem

the element computation

n

the number of elements contained in the array buffer.

Attributes

Returns

A array buffer that contains the results of n evaluations of elem.

Definition Classes
Inherited from:
StrictOptimizedSeqFactory
Source
Factory.scala
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 array buffer containing the results of some element computation a number of times.

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

Type parameters

A

the element type of the array buffer

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

Attributes

Returns

A array buffer 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 array buffer containing the results of some element computation a number of times.

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

Type parameters

A

the element type of the array buffer

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

Attributes

Returns

A array buffer 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 array buffer containing the results of some element computation a number of times.

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

Type parameters

A

the element type of the array buffer

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

Attributes

Returns

A array buffer 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 array buffer containing the results of some element computation a number of times.

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

Type parameters

A

the element type of the array buffer

Value parameters

elem

the element computation

n1

the number of elements in the 1st dimension

n2

the number of elements in the 2nd dimension

Attributes

Returns

A array buffer 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 array buffer containing repeated applications of a function to a start value.

Produces a array buffer containing repeated applications of a function to a start value.

Type parameters

A

the element type of the array buffer

Value parameters

f

the function that's repeatedly applied

len

the number of elements contained in the array buffer

start

the start value of the array buffer

Attributes

Returns

a array buffer 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 array buffer containing equally spaced values in some integer interval.

Produces a array buffer containing equally spaced values in some integer interval.

Type parameters

A

the element type of the array buffer, which must have an Integral instance

Value parameters

end

the end value of the array buffer (the first value NOT contained)

start

the start value of the array buffer

step

the difference between successive elements of the array buffer (must be positive or negative)

Attributes

Returns

a array buffer 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 array buffer containing a sequence of increasing of integers.

Produces a array buffer containing a sequence of increasing of integers.

Type parameters

A

the element type of the array buffer, which must have an Integral instance

Value parameters

end

the end value of the array buffer (the first value NOT contained)

start

the first element of the array buffer

Attributes

Returns

a array buffer with values start, start + 1, ..., end - 1

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

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

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

Type parameters

A

the element type of the array buffer

Value parameters

f

The function computing element values

n

The number of elements in the array buffer

Attributes

Returns

A array buffer consisting of elements f(0), ..., f(n -1)

Definition Classes
Inherited from:
StrictOptimizedSeqFactory
Source
Factory.scala
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 array buffer containing values of a given function over ranges of integer values starting from 0.

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

Type parameters

A

the element type of the array buffer

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

Attributes

Returns

A array buffer 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 array buffer containing values of a given function over ranges of integer values starting from 0.

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

Type parameters

A

the element type of the array buffer

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

Attributes

Returns

A array buffer 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 array buffer containing values of a given function over ranges of integer values starting from 0.

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

Type parameters

A

the element type of the array buffer

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

Attributes

Returns

A array buffer 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 array buffer containing values of a given function over ranges of integer values starting from 0.

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

Type parameters

A

the element type of the array buffer

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

Attributes

Returns

A array buffer 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]

Attributes

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

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

Produces a array buffer 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

Attributes

Returns

a array buffer that produces elements using f until f returns None

Inherited from:
IterableFactory
Source
Factory.scala

Concrete fields

final val DefaultInitialSize: 16

Attributes

Source
ArrayBuffer.scala

Implicits

Inherited implicits

implicit def iterableFactory[A]: Factory[A, ArrayBuffer[A]]

Attributes

Inherited from:
IterableFactory
Source
Factory.scala
Generated with
Copyright (c) 2002-2026, LAMP/EPFL
Copyright (c) 2002-2026, LAMP/EPFL