Class FoldLeft.FoldLeftHelper<T>

java.lang.Object

org.apache.commons.functor.core.algorithm.FoldLeft.FoldLeftHelper<T>

Type Parameters:

T - the returned evaluation type.

All Implemented Interfaces:

Functor, UnaryFunctor<T>, UnaryProcedure<T>

Enclosing class:

FoldLeft<T>

private static class FoldLeft.FoldLeftHelper<T>
extends Object
implements UnaryProcedure<T>

Helper procedure.

Version:

$Revision$ $Date$

Field Summary

Fields

Modifier and Type	Field	Description
private final BinaryFunction<? super T, ? super T, ? extends T>	function	The wrapped function.
private T	seed	The seed object.
private boolean	started	Flag to check the helper started or not.

Constructor Summary

Constructors

Constructor	Description
FoldLeftHelper(BinaryFunction<? super T, ? super T, ? extends T> function)	Create a seedless FoldLeftHelper.
FoldLeftHelper(T seed, BinaryFunction<? super T, ? super T, ? extends T> function)	Create a new FoldLeftHelper.

Method Summary

Modifier and Type	Method	Description
(package private) T	getResult()	Get current result.
void	run(T obj)	Execute this procedure.

Methods inherited from class Object

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

Methods inherited from interface Functor

equals, hashCode, toString

Field Details

function

private final BinaryFunction<? super T, ? super T, ? extends T> function

The wrapped function.

seed

private T seed

The seed object.

started

private boolean started

Flag to check the helper started or not.

Constructor Details

FoldLeftHelper

public FoldLeftHelper(BinaryFunction<? super T, ? super T, ? extends T> function)

Create a seedless FoldLeftHelper.

Parameters:

function - The wrapped function

FoldLeftHelper

FoldLeftHelper(T seed,
 BinaryFunction<? super T, ? super T, ? extends T> function)

Create a new FoldLeftHelper.

Parameters:

seed - initial left-side argument

function - The wrapped function

Method Details

run

public void run(T obj)

Execute this procedure.

Specified by:

run in interface UnaryProcedure<T>

Parameters:

obj - an A parameter to this execution

getResult

T getResult()

Get current result.

Returns:

Object