如何遍历 TypeScript 中的 Set? [英] How to iterate over a Set in TypeScript?

问题描述

你如何在 TypeScript 中迭代一个集合?for..of 不起作用:

How do you iterate over a set in TypeScript? for..of does not work:

'Set<string>' is not an array type or a string type

.forEach 是不可接受的，因为它隐藏了this.我不想在 try catch 块中执行 while 循环.我错过了什么?它不可能笨到需要 try {while} catch {}.

.forEach is not acceptable, because it hides this. I'd prefer not to do a while loop in a try catch block. What am I missing? It can't it possibly so clumsy as to require try {while} catch {}.

推荐答案

@SnareChops 大部分是正确的:

@SnareChops was mostly correct:

mySet.forEach(function(item){
    // do something with "this"
}, **this**);

这有效.

我猜:

for(item of mySet.values()){
}

如果我不使用 es-shim 的东西，它会工作，这对我来说一切都搞砸了.但是垫片的东西是由Angular 2的工作人员规定的所以¯_(ツ)_/¯

Would work if I weren't working with es-shim stuff which is messing everything up for me. But the shim stuff is prescribed by the Angular 2 crew so ¯_(ツ)_/¯

唯一有效的是:

for (var item of Array.from(set.values())) {
}

或类似的东西，这太可怕了.

or something like that, which is just terrible.

这篇关于如何遍历 TypeScript 中的 Set?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！