1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | 16x 12x 12x 64x 11x 53x 53x | import Iterator from './Iterator'; export default class DistinctIterator extends Iterator { constructor(arr) { super(arr); } *[Symbol.iterator]() { let set = new Set(); for (let item of this.arr) { if (set.has(item)) { continue; } set.add(item); yield item; } } } |