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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.lang3.function;

import java.util.Objects;
import java.util.function.Function;

/**
 * Represents a function that accepts three arguments and produces a result. This is the three-arity specialization of
 * {@link Function}.
 *
 * 

* This is a functional interface whose functional method is * {@link #apply(Object, Object, Object)}. *

* * @param the type of the first argument to the function * @param the type of the second argument to the function * @param the type of the third argument to the function * @param the type of the result of the function * * @see Function * @since 3.12.0 */ @FunctionalInterface public interface TriFunction { /** * Applies this function to the given arguments. * * @param t the first function argument * @param u the second function argument * @param v the third function argument * @return the function result */ R apply(T t, U u, V v); /** * Returns a composed function that first applies this function to its input, and then applies the {@code after} * function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the * composed function. * * @param the type of output of the {@code after} function, and of the composed function * @param after the function to apply after this function is applied * @return a composed function that first applies this function and then applies the {@code after} function * @throws NullPointerException if after is null */ default TriFunction andThen(final Function after) { Objects.requireNonNull(after); return (final T t, final U u, final V v) -> after.apply(apply(t, u, v)); } }




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