Packagesystem.data.iterators
Classpublic class LinkedListIterator
InheritanceLinkedListIterator Inheritance Object
Implements ListIterator

Converts a LinkedList to a specific ListIterator.

Example : 

     import system.data.lists.LinkedList ;
     import system.data.ListIterator ;
     
     var list:LinkedList = new LinkedList() ;
     list.add("item1") ;
     list.add("item2") ;
     list.add("item3") ;
     var it:ListIterator = list.listIterator(2) ;
     trace( it.hasPrevious() + " : " + it.previous() ) ; // true : item2


Public Methods
 MethodDefined By
  
LinkedListIterator(list:LinkedList, index:uint = 0)
Creates a new LinkedListIterator instance.
LinkedListIterator
  
add(o:*):void
Inserts the specified element into the list (optional operation).
LinkedListIterator
  
checkForComodification():void
This method check the comodification of the LinkedList and test if the iterator is valid and can continue to process.
LinkedListIterator
  
hasNext():Boolean
Returns true if the iteration has more elements.
LinkedListIterator
  
hasPrevious():Boolean
Checks to see if there is a previous element that can be iterated to.
LinkedListIterator
  
key():*
Illegal operation in this iterator, uses nextIndex() and previousIndex() method.
LinkedListIterator
  
next():*
Returns the next element in the iteration.
LinkedListIterator
  
nextIndex():uint
Returns the index of the element that would be returned by a subsequent call to next.
LinkedListIterator
  
previous():*
Returns the previous element in the collection.
LinkedListIterator
  
previousIndex():int
Returns the index of the element that would be returned by a subsequent call to previous.
LinkedListIterator
  
remove():*
Removes from the underlying collection the last element returned by the iterator (optional operation).
LinkedListIterator
  
reset():void
Reset the internal pointer of the iterator (optional operation).
LinkedListIterator
  
seek(position:*):void
Change the position of the internal pointer of the iterator (optional operation).
LinkedListIterator
  
set(o:*):void
Replaces the last element returned by next or previous with the specified element (optional operation).
LinkedListIterator
Constructor Detail
LinkedListIterator()Constructor
public function LinkedListIterator(list:LinkedList, index:uint = 0)

Creates a new LinkedListIterator instance.

Parameters
list:LinkedList — The position of the internal pointer of this Iterator
 
index:uint (default = 0) — The owner LinkedList of this iterator.
Method Detail
add()method
public function add(o:*):void

Inserts the specified element into the list (optional operation).

Example :

         import system.data.ListIterator ;
         import system.data.lists.LinkedList ;
         
         var list:LinkedList = new LinkedList() ;
         
         list.add("item1") ;
         list.add("item2") ;
         list.add("item3") ;
         
         var it:ListIterator = list.listIterator(1) ;
         it.insert("item0") ;
         
         trace(list) ;

Attention : Dont' use this method in a loop with hasPrevious() and previous() method.

Parameters

o:*

checkForComodification()method 
public function checkForComodification():void

This method check the comodification of the LinkedList and test if the iterator is valid and can continue to process.

hasNext()method 
public function hasNext():Boolean

Returns true if the iteration has more elements.

Returns
Boolean — true if the iteration has more elements.
hasPrevious()method 
public function hasPrevious():Boolean

Checks to see if there is a previous element that can be iterated to.

Example :

         import system.data.ListIterator ;
         import system.data.lists.LinkedList ;
         
         var list:LinkedList = new LinkedList() ;
         
         list.add("item1") ;
         list.add("item2") ;
         list.add("item3") ;
         
         var it:ListIterator = list.listIterator( 2 ) ;
         
         trace( it.hasPrevious() ) ;

Returns
Boolean
key()method 
public function key():*

Illegal operation in this iterator, uses nextIndex() and previousIndex() method.

Returns
*

Throws
IllegalOperationError — if the user call this method, this method is unsupported.
next()method 
public function next():*

Returns the next element in the iteration.

Returns
* — the next element in the iteration.
nextIndex()method 
public function nextIndex():uint

Returns the index of the element that would be returned by a subsequent call to next.

Returns
uint — the index of the element that would be returned by a subsequent call to next.
previous()method 
public function previous():*

Returns the previous element in the collection.

Returns
* — the previous element in the collection.
previousIndex()method 
public function previousIndex():int

Returns the index of the element that would be returned by a subsequent call to previous.

Returns
int — the index of the element that would be returned by a subsequent call to previous.
remove()method 
public function remove():*

Removes from the underlying collection the last element returned by the iterator (optional operation).

Returns
*
reset()method 
public function reset():void

Reset the internal pointer of the iterator (optional operation).

seek()method 
public function seek(position:*):void

Change the position of the internal pointer of the iterator (optional operation).

Parameters

position:*

set()method 
public function set(o:*):void

Replaces the last element returned by next or previous with the specified element (optional operation).

Parameters

o:*





Mardi Août 16 2011, 02:33 PM +02:00