1 /* 2 * Copyright 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.arch.core.util; 18 19 /** 20 * Represents a function. 21 * 22 * @param <I> the type of the input to the function 23 * @param <O> the type of the output of the function 24 */ 25 public interface Function<I, O> { 26 /** 27 * Applies this function to the given input. 28 * 29 * @param input the input 30 * @return the function result. 31 */ 32 O apply(I input); 33 } 34
