1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.io.function; 19 20 /** 21 * Defines package-private constants. 22 */ 23 final class Constants { 24 25 /** 26 * No-op singleton. 27 */ 28 @SuppressWarnings("rawtypes") 29 static final IOBiConsumer IO_BI_CONSUMER = (t, u) -> {/* No-op */}; 30 31 /** 32 * No-op singleton. 33 */ 34 @SuppressWarnings("rawtypes") 35 static final IOBiFunction IO_BI_FUNCTION = (t, u) -> null; 36 37 /** 38 * No-op singleton. 39 */ 40 @SuppressWarnings("rawtypes") 41 static final IOFunction IO_FUNCTION_ID = t -> t; 42 43 /** 44 * Always false. 45 */ 46 static final IOPredicate<Object> IO_PREDICATE_FALSE = t -> false; 47 48 /** 49 * Always true. 50 */ 51 static final IOPredicate<Object> IO_PREDICATE_TRUE = t -> true; 52 53 /** 54 * No-op singleton. 55 */ 56 @SuppressWarnings("rawtypes") 57 static final IOTriConsumer IO_TRI_CONSUMER = (t, u, v) -> {/* No-op */}; 58 Constants()59 private Constants() { 60 // We don't want instances 61 } 62 63 } 64