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32 lines
744 B
TypeScript
32 lines
744 B
TypeScript
// 日志装饰器
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function log(target: any, propertyKey: string, descriptor: PropertyDescriptor) {
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const originalMethod = descriptor.value;
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descriptor.value = function (...args: any[]) {
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console.log(`Calling ${propertyKey} with args: ${JSON.stringify(args)}`);
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const result = originalMethod.apply(this, args);
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console.log(`${propertyKey} returned: ${result}`);
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return result;
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};
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return descriptor;
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}
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// 示例类
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class MathOperations {
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@log
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add(a: number, b: number): number {
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return a + b;
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}
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@log
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multiply(a: number, b: number): number {
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return a * b;
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}
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}
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// 创建实例并调用方法
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const math = new MathOperations();
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math.add(1, 2); // 调用加法
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math.multiply(3, 4); // 调用乘法
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