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                >[success] # 定義一個類創建實例為參數 ~~~ 1.使用 new()=> 類 ,來規定傳入的是一個類作為參數 ~~~ * 當參數是構造函數 需要new 實例化時候聲明 這樣什么不行報錯 ~~~ function factory<T>(type: T): T { return new type() // This expression is not constructable. } ~~~ * 正確用法 ~~~ const create = <T>(c:new()=>T):T=>{ return new c() } class Infos{ public age:number constructor(){ this.age = 1 } } create(Infos) ~~~
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