1/* 2 * Copyright (c) 2025 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 16class A{ 17 field1:int; 18 field2:int; 19 method1(){}; 20} 21 22class C<T extends keyof A>{} 23 24function getProperty<T, K extends keyof A>(obj: T, key: K){} 25 26function main():void{ 27 let c1 = new C<"field1">; 28 let c2 = new C<"field2">; 29 let c3 = new C<"method1">; 30 let c4 = new C<keyof A>; 31 32 let a = new A(); 33 getProperty<A, keyof A>(a, "field1"); 34 getProperty<A, keyof A>(a, "field2"); 35 getProperty<A, keyof A>(a, "method1"); 36} 37