/* * Copyright 2015 Google Inc. * * 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 java.util.function; import static javaemul.internal.InternalPreconditions.checkCriticalNotNull; /** * See <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/BiFunction.html"> * the official Java API doc</a> for details. * * @param <T> type of the first argument * @param <U> type of the second argument * @param <R> type of the return value */ @FunctionalInterface public interface BiFunction<T, U, R> { R apply(T t, U u); default <V> BiFunction<T, U, V> andThen(Function<? super R, ? extends V> after) { checkCriticalNotNull(after); return (t, u) -> after.apply(apply(t, u)); } }