edu.rice.cs.plt.iter
Class ReadOnceIterable<T>

java.lang.Object
  edu.rice.cs.plt.iter.ReadOnceIterable<T>

All Implemented Interfaces:

java.lang.Iterable<T>

public class ReadOnceIterable<T>
extends java.lang.Object
implements java.lang.Iterable<T>

An iterable that simply wraps an Iterator. Unlike most iterables, state changes on the wrapped iterator (such as advancing) are reflected across invocations of iterator(); once the iterator has been traversed, this iterable is effectively empty. While these semantics are inconvenient at times, they also allow a very lightweight implementation. Clients that need to traverse an iterator multiple times (or that need a SizedIterable) can use a SnapshotIterable instead, at the expense of copying and storing the entire contents of the iterator.

Constructor Summary

ReadOnceIterable(java.util.Iterator<T> iter)

Method Summary

java.util.Iterator<T>	iterator()
static <T> ReadOnceIterable<T>	make(java.util.Iterator<T> iter) Call the constructor (allows T to be inferred)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReadOnceIterable

public ReadOnceIterable(java.util.Iterator<T> iter)

Method Detail

iterator

public java.util.Iterator<T> iterator()

Specified by:

iterator in interface java.lang.Iterable<T>

make

public static <T> ReadOnceIterable<T> make(java.util.Iterator<T> iter)

Call the constructor (allows T to be inferred)