/* * The MIT License (MIT) * * Copyright (c) 2017-2020 Yegor Bugayenko * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package org.cactoos.func; import org.cactoos.Func; import org.cactoos.Proc; import org.cactoos.scalar.And; /** * Executes a {@link org.cactoos.Proc} for each element of an * {@link java.lang.Iterable} * * <p> * This class can be effectively used to iterate through a collection, just like * {@link java.util.stream.Stream#forEach(java.util.function.Consumer)} works: * </p> * * {@code * new ForEach( * new ProcOf<>(input -> System.out.printf("\'%s\' ", input)), * ).execute( * new IterableOf<>("Mary", "John", "William", "Napkin") * ); // will print 'Mary' 'John' 'William' 'Napkin' to standard output * } * <p> * There is no thread-safety guarantee. * * @param <X> The type to itetare over * @since 1.0 */ public final class ForEach<X> implements Proc<Iterable<X>> { /** * The proc. */ private final Func<X, Boolean> func; /** * Ctor. * * @param proc The proc to execute */ public ForEach(final Proc<X> proc) { this.func = new FuncOf<>( proc, true ); } @Override public void exec(final Iterable<X> input) throws Exception { new And( this.func, input ).value(); } }