TypeScript中的Hashset

Question

我试图在TypeScript中做一些非常基本的事情.在解析本文中引用的地图时获取唯一字符串列表.

这是我试图做的事情:

let myData = new Array<string>();
for (let myObj of this.getAllData()) {
    let name = myObj.name;
    console.log("## we have " + name);
    console.log("### is property ? " + myData.hasOwnProperty(name));
    if (!myData.hasOwnProperty(name)){
        myData.push(name);
    }
}

对于任何字符串,我的打印输出将始终评估为false,重复或不重复.这是一些示例输出:

 ## we have COW
 ### is property ? false
 ## we have COW
 ### is property ? false
 ## we have RAODN
 ### is property ? false
 ## we have COOL
 ### is property ? false

但是,当该过程完成时,我的列表包含重复项.我试过看过这个文档,但是没有提到'hashset'或者一般的任何集合.

Set的TypeScript中是否有相同的东西？即一系列独特元素

Answer 1

它存在!

mySet: Set<string> = new Set<string>();

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set