【TypeScript】十三、迭代器，生成器

1. 迭代器

let s = [1,2,3,4]
let it:Iterator<number> = s[Symbol.iterator]()
console.log(it.next());
console.log(it.next());
console.log(it.next());
console.log(it.next());
console.log(it.next());

2. 生成器

for（let a of s) {
}