arrayset.js

const symbol_set = Symbol("set");

export class ArraySet {

    constructor() {
        this[symbol_set] = new Set();
    }

    get size() {
        return this[symbol_set].size;
    }

    add(...elements) {
        this[symbol_set].add(elements.join('-'));
    }

    clear() {
        this[symbol_set].clear();
    }

    has(...elements) {
        return this[symbol_set].has(elements.join('-'));
    }

    *[Symbol.iterator]() {
        for (let item of this[symbol_set][Symbol.iterator]()) {
            yield item.split('-');
        }
    }

}