it.unimi.dsi.fastutil.booleans
Class AbstractBooleanBidirectionalIterator

java.lang.Object
  extended byit.unimi.dsi.fastutil.booleans.AbstractBooleanIterator
      extended byit.unimi.dsi.fastutil.booleans.AbstractBooleanBidirectionalIterator
All Implemented Interfaces:
BidirectionalIterator, BooleanBidirectionalIterator, BooleanIterator, Iterator
Direct Known Subclasses:
AbstractBooleanListIterator

public abstract class AbstractBooleanBidirectionalIterator
extends AbstractBooleanIterator
implements BooleanBidirectionalIterator

An abstract class facilitating the creation of type-specific bidirectional iterators.

To create a type-specific bidirectional iterator, besides what is needed for an iterator you need both a method returning the previous element as primitive type and a method returning the previous element as an object. However, if you inherit from this class you need just one (anyone).

See Also:
Iterator

Method Summary
 int back(int n)
          This method just iterates previous() for at most n times, stopping if BidirectionalIterator.hasPrevious() becomes false.
 Object previous()
          This method just invokes the type-specific version.
 boolean previousBoolean()
          This method just invokes the generic version.
 
Methods inherited from class it.unimi.dsi.fastutil.booleans.AbstractBooleanIterator
next, nextBoolean, remove, skip
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface it.unimi.dsi.fastutil.booleans.BooleanIterator
nextBoolean, skip
 
Methods inherited from interface java.util.Iterator
hasNext, next, remove
 
Methods inherited from interface it.unimi.dsi.fastutil.BidirectionalIterator
hasPrevious
 

Method Detail

previousBoolean

public boolean previousBoolean()
This method just invokes the generic version.

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

previous

public Object previous()
This method just invokes the type-specific version.

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

back

public int back(int n)
This method just iterates previous() for at most n times, stopping if BidirectionalIterator.hasPrevious() becomes false.

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