org.apache.commons.functor.Function.java Source code

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Here is the source code for org.apache.commons.functor.Function.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.commons.functor;

/**
 * A functor that takes no arguments and returns a value.
 * <p>
 * Implementors are encouraged but not required to make their functors
 * {@link java.io.Serializable Serializable}.
 * </p>
 *
 * @param <T> the returned value type.
 * @since 1.0
 * @version $Revision: 1345136 $ $Date: 2012-06-01 09:47:06 -0300 (Fri, 01 Jun 2012) $
 */
public interface Function<T> extends NullaryFunctor {
    /**
     * Evaluate this function.
     * @return the T result of this evaluation
     */
    T evaluate();
}