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Some stellar general purpose utils.
/*
* Copyright (C) Posten Norge AS
*
* 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 no.digipost.function;
import java.util.function.Function;
/**
* Represents a function that accepts four arguments and produces a result.
* This is a four-arity extension to the functional interfaces {@link Function}
* and {@link java.util.function.BiFunction BiFunction} from the JDK.
*
* @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 fourth argument to the function
* @param the type of the result of the function
*
* @see TriFunction
*/
@FunctionalInterface
public interface QuadFunction {
R apply(T t, U u, V v, W w);
default QuadFunction andThen(Function after) {
return (t, u, v, w) -> after.apply(apply(t, u, v, w));
}
}