1/* 2 * Copyright (c) 2022-2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16export default class ArrayUtils { 17 18 /* 19 * When performing a 'forEach' operation on an array, 20 * elements that meet the conditions are allowed to be executed at the end. 21 */ 22 static forEachWithDefer<T>( 23 list: readonly T[], 24 deferChecker: (value: T, index: number, array: readonly T[]) => boolean, 25 callbackfn: (value: T, index: number, array: readonly T[]) => void, 26 thisArg?: object 27 ): void { 28 if (!list.length) { 29 return; 30 } 31 32 const temp: number[] = []; 33 list.forEach((item, index, array) => { 34 if (deferChecker(item, index, array)) { 35 temp.push(index); 36 return; 37 } 38 callbackfn.call(thisArg, item, index, array); 39 }); 40 41 temp.forEach((index) => { 42 callbackfn.call(thisArg, list[index], index, list); 43 }); 44 } 45} 46