scala.collection.mutable

class ArrayBuffer

[source: scala/collection/mutable/ArrayBuffer.scala]

@serializable

class ArrayBuffer[A]
extends Buffer[A] with ResizableArray[A]
An implementation of the Buffer class using an array to represent the assembled sequence internally.
Author
Matthias Zenger
Version
1.0, 15/03/2004
Direct Known Subclasses:
Script, NodeBuffer

Values and Variables inherited from ResizableArray
initialSize, array, size0
Method Summary
override def ++: (iter : Iterable[A]) : Buffer[A]
Prepends a number of elements provided by an iterable object via its elements method. The identity of the buffer is returned.
override def ++= (iter : Iterable[A]) : Unit
Appends a number of elements provided by an iterable object via its elements method. The identity of the buffer is returned.
override def ++= (src : Array[A], start : Int, len : Int) : Unit
Appends a number of elements in an array
def +: (elem : A) : Buffer[A]
Prepends a single element to this buffer and return the identity of the buffer.
def += (elem : A) : Unit
Appends a single element to this buffer and returns the identity of the buffer.
override def apply (i : Int) : A
Returns the i-th element of this ArrayBuffer.
def clear : Unit
Clears the buffer contents.
override def clone : Buffer[A]
Return a clone of this buffer.
override def equals (obj : Any) : Boolean
Checks if two buffers are structurally identical.
def insertAll (n : Int, iter : Iterable[A]) : Unit
Inserts new elements at the index n. Opposed to method update, this method will not replace an element with a one. Instead, it will insert a new element at index n.
def remove (n : Int) : A
Removes the element on a given index position.
protected override def stringPrefix : String
Defines the prefix of the string representation.
def update (n : Int, newelem : A) : Unit
Replace element at index n with the new element newelem.
Methods inherited from ResizableArray
length, copyToArray, copyToBuffer, elements, ensureSize, swap, copy
Methods inherited from Buffer
+, ++=, ++, ++, -=, append, appendAll, prepend, prependAll, insert, trimStart, trimEnd, <<, hashCode
Methods inherited from Seq
size, isEmpty, concat, ++, isDefinedAt, lastIndexOf, map, flatMap, filter, take, drop, takeWhile, dropWhile, reverse, contains, slice, subseq, toArray
Methods inherited from Collection
toString
Methods inherited from Iterable
foreach, forall, exists, find, findIndexOf, indexOf, foldLeft, foldRight, /:, :\, reduceLeft, reduceRight, sameElements, toList, mkString, mkString, addString, addString, projection, hasDefiniteSize
Methods inherited from PartialFunction
orElse, andThen
Methods inherited from Function1
compose
Methods inherited from AnyRef
getClass, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf
Method Details
def +=(elem : A) : Unit
Appends a single element to this buffer and returns the identity of the buffer.
Parameters
elem - the element to append.
Overrides
Buffer.+=

override def ++=(iter : Iterable[A]) : Unit
Appends a number of elements provided by an iterable object via its elements method. The identity of the buffer is returned.
Parameters
iter - the iterable object.
Returns
the updated buffer.
Overrides
Buffer.++=

override def ++=(src : Array[A], start : Int, len : Int) : Unit
Appends a number of elements in an array
Parameters
src - the array
start - the first element to append
len - the number of elements to append
Overrides
Buffer.++=

def +:(elem : A) : Buffer[A]
Prepends a single element to this buffer and return the identity of the buffer.
Parameters
elem - the element to append.
Returns
the updated buffer.
Overrides
Buffer.+:

override def apply(i : Int) : A
Returns the i-th element of this ArrayBuffer.
Parameters
i - the specified index.
Returns
the i-th element.
Throws
Predef.IndexOutOfBoundException - if i is out of bounds.
Overrides
ResizableArray.apply

override def ++:(iter : Iterable[A]) : Buffer[A]
Prepends a number of elements provided by an iterable object via its elements method. The identity of the buffer is returned.
Parameters
iter - the iterable object.
Returns
the updated buffer.
Overrides
Buffer.++:

def insertAll(n : Int, iter : Iterable[A]) : Unit
Inserts new elements at the index n. Opposed to method update, this method will not replace an element with a one. Instead, it will insert a new element at index n.
Parameters
n - the index where a new element will be inserted.
iter - the iterable object providing all elements to insert.
Throws
Predef.IndexOutOfBoundsException - if n is out of bounds.
Overrides
Buffer.insertAll

def update(n : Int, newelem : A) : Unit
Replace element at index n with the new element newelem.
Parameters
n - the index of the element to replace.
newelem - the new element.
Throws
Predef.IndexOutOfBoundsException - if n is out of bounds.
Overrides
Buffer.update

def remove(n : Int) : A
Removes the element on a given index position.
Parameters
n - the index which refers to the element to delete.
Returns
the updated array buffer.
Throws
Predef.IndexOutOfBoundsException - if n is out of bounds.
Overrides
Buffer.remove

def clear : Unit
Clears the buffer contents.
Overrides
Buffer.clear

override def clone : Buffer[A]
Return a clone of this buffer.
Returns
an ArrayBuffer with the same elements.
Overrides
Buffer.clone

override def equals(obj : Any) : Boolean
Checks if two buffers are structurally identical.
Returns
true, iff both buffers contain the same sequence of elements.

protected override def stringPrefix : String
Defines the prefix of the string representation.
Overrides
Buffer.stringPrefix