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 16/*--- 17 desc: 06 Other State Management Functionality 18 name: 06.other_state_management_functionality/06.03.built-in_component_two-way_value_synchronization_'$$'_dollar_dollar_02 19 tags: 20 ---*/ 21 22function concat(s: string): void { 23 s = s + " World!" 24} 25 26function main(): void { 27 let s = "Hello" 28 concat($$s) 29 assert(s == "Hello World!") 30 31 let ss = "Hello" 32 concat(ss) 33 assert(ss == "Hello") 34}