| // Copyright 2010 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry5.func; |
| |
| /** |
| * A reducer takes an accumulator value and a single value from a collection and computes a new |
| * accumulator value. |
| * <A> type of accumulator |
| * <T> type of collection value |
| * |
| * @since 5.2.0 |
| */ |
| public interface Reducer<A, T> |
| { |
| A reduce(A accumulator, T value); |
| } |
