scala.collection.mutable

trait Buffer

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

@cloneable

trait Buffer[A]
extends Seq[A] with Scriptable[Message[(Location, A)]] with CloneableCollection
Buffers are used to create sequences of elements incrementally by appending, prepending, or inserting new elements. It is also possible to access and modify elements in a random access fashion via the index of the element in the current sequence.
Author
Matthias Zenger
Version
1.1, 02/03/2004
Direct Known Subclasses:
ArrayBuffer, BufferProxy, ListBuffer, ObservableBuffer, SynchronizedBuffer, RichStringBuilder

Method Summary
def + (elem : A) : Buffer[A]
Append a single element to this buffer and return the identity of the buffer.
override def ++ [B >: A](that : Iterable[B]) : Seq[B]
Appends two iterable objects.
def ++ (iter : Iterator[A]) : Buffer[A]
Appends a number of elements provided by an iterator via its elements method. The identity of the buffer is returned.
def ++ (iter : Iterable[A]) : Buffer[A]
Appends a number of elements provided by an iterable object via its elements method. The identity of the buffer is returned.
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.
def ++= (src : Array[A], start : Int, len : Int) : Unit
Appends a number of elements in an array
def ++= (iter : Iterator[A]) : Unit
Appends a number of elements provided by an iterator
def ++= (iter : Iterable[A]) : Unit
Appends a number of elements provided by an iterable object via its elements method.
abstract def +: (elem : A) : Buffer[A]
Prepend a single element to this buffer and return the identity of the buffer.
abstract def += (elem : A) : Unit
Append a single element to this buffer.
def -= (x : A) : Unit
Removes a single element from this buffer, at its first occurrence. If the list does not contain that element, it is unchanged
def << (cmd : Message[(Location, A)]) : Unit
Send a message to this scriptable object.
def append (elems : A*) : Unit
Appends a sequence of elements to this buffer.
def appendAll (iter : Iterable[A]) : Unit
Appends a number of elements provided by an iterable object via its elements method.
abstract def clear : Unit
Clears the buffer contents.
override def clone : Buffer[A]
Return a clone of this buffer.
override def hashCode : Int
The hashCode method always yields an error, since it is not safe to use buffers as keys in hash tables.
def insert (n : Int, elems : 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 the new elements at index n.
abstract 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 prepend (elems : A*) : Unit
Prepend an element to this list.
def prependAll (iter : Iterable[A]) : Unit
Prepends a number of elements provided by an iterable object via its elements method. The identity of the buffer is returned.
abstract def readOnly : Seq[A]
return a read only alias of this buffer
abstract 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 trimEnd (n : Int) : Unit
Removes the last n elements.
def trimStart (n : Int) : Unit
Removes the first n elements.
abstract def update (n : Int, newelem : A) : Unit
Replace element at index n with the new element newelem.
Methods inherited from Seq
length (abstract), size, isEmpty, concat, last, lastOption, headOption, isDefinedAt, lastIndexOf, map, flatMap, filter, take, drop, slice, takeWhile, dropWhile, reverse, contains, subseq, toArray, projection, equalsWith, startsWith, endsWith, indexOf, containsSlice
Methods inherited from Collection
toString
Methods inherited from Iterable
elements (abstract), foreach, forall, exists, find, findIndexOf, indexOf, foldLeft, foldRight, /:, :\, reduceLeft, reduceRight, copyToBuffer, sameElements, toList, toStream, mkString, mkString, mkString, addString, addString, copyToArray, hasDefiniteSize
Methods inherited from PartialFunction
orElse, andThen
Methods inherited from Function1
apply (abstract), compose
Methods inherited from AnyRef
getClass, equals, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized
Methods inherited from Any
==, !=, isInstanceOf, asInstanceOf