1 /* 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package java.util.function; 26 27 /** 28 * Apply a function to the input object yielding an appropriate {@code long} 29 * value; this is the {@code long}-bearing specialization for {@link Function}. 30 * 31 * @param <T> the type of input objects to the {@code apply} operation. 32 * 33 * @since 1.8 34 */ 35 public interface LongFunction<T> /* extends Function<T,Long> */ { 36 // 37 // /** 38 // * Apply a function to the input object yielding an appropriate 39 // * {@code Long}. 40 // * 41 // * @param t the input object to the function 42 // * @return the function output {@code Long} 43 // */ 44 // public default Long apply(T t) { return applyAsLong(t); } 45 46 /** 47 * Apply a function to the input object yielding an appropriate {@code long} 48 * value. 49 * 50 * @param t the input object to the function 51 * @return the function output value 52 */ 53 public long applyAsLong(T t); 54 }