net.emaze.dysfunctional.consumers

Class OneElement<E>

java.lang.Object

net.emaze.dysfunctional.consumers.OneElement<E>

Type Parameters:

E - the iterator element type

All Implemented Interfaces:

Delegate<E,Iterator<E>>

public class OneElement<E>
extends Object
implements Delegate<E,Iterator<E>>

A unary delegate consuming an iterator yielding the only element contained in it.

Author:

rferranti

Constructor Summary

Constructors

Constructor and Description
OneElement()

Method Summary

Modifier and Type	Method and Description
E	perform(Iterator<E> consumable) Consumes the iterator and yields the only element contained in it.

Methods inherited from class java.lang.Object

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

Constructor Detail

OneElement

public OneElement()

Method Detail

perform

public E perform(Iterator<E> consumable)

Consumes the iterator and yields the only element contained in it.

Specified by:

perform in interface Delegate<E,Iterator<E>>

Parameters:

consumable - the iterator to be consumed

Returns:

the only element contained in the iterator

Throws:

IllegalArgumentException - if the source iterator is empty

IllegalStateException - if the source iterator contains more than one element