net.sf.kdgcommons.collections

Interface CollectionUtil.IndexValueReduceFunctor<V,R>

Enclosing class:

CollectionUtil

public static interface CollectionUtil.IndexValueReduceFunctor<V,R>

A functor used for the CollectionUtil.reduce(java.util.Collection<V>, net.sf.kdgcommons.collections.CollectionUtil.IndexValueReduceFunctor<V, R>) operation. The invoke(int, V, R) function is called for every element of a collection, and is responsible for aggregating the results. On the first invocation, the "pending" result is null; on subsequent invocations, it is the value returned from the previous invocation.

Since:

1.0.10

Method Summary

Modifier and Type	Method and Description
R	invoke(int index, V value, R pendingResult)

Method Detail

invoke

R invoke(int index,
         V value,
         R pendingResult)
  throws Exception

Throws:

Exception