it.unimi.dsi.fastutil.objects
Interface ObjectBidirectionalIterator

All Superinterfaces:
BidirectionalIterator, Iterator, ObjectIterator
All Known Subinterfaces:
ObjectListIterator
All Known Implementing Classes:
AbstractObjectBidirectionalIterator, AbstractObjectListIterator

public interface ObjectBidirectionalIterator
extends ObjectIterator, BidirectionalIterator

A type-specific bidirectional iterator; provides an additional method to reduce type juggling, and the possibility to skip elements backwards.

See Also:
BidirectionalIterator

Method Summary
 int back(int n)
          Moves back for the given number of elements.
 Object previous()
          Returns the previous element as a primitive type.
 
Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectIterator
skip
 
Methods inherited from interface java.util.Iterator
hasNext, next, remove
 
Methods inherited from interface it.unimi.dsi.fastutil.BidirectionalIterator
hasPrevious
 

Method Detail

previous

public Object previous()
Returns the previous element as a primitive type.

Specified by:
previous in interface BidirectionalIterator
Returns:
the previous element from the collection.
See Also:
ListIterator.previous()

back

public int back(int n)
Moves back for the given number of elements.

The effect of this call is exactly the same as that of calling previous() for n times (possibly stopping if BidirectionalIterator.hasPrevious() becomes false).

Parameters:
n - the number of elements to skip back.
Returns:
the number of elements actually skipped.
See Also:
Iterator.next()