Web streams has no synchronous path. Even if your source has data ready and your transform is a pure function, you still pay for promise creation and microtask scheduling on every operation. Promises are fantastic for cases in which waiting is actually necessary, but they aren't always necessary. The new API lets you stay in sync-land when that's what you need.
Beckhams seen together in Paris after Brooklyn row，详情可参考服务器推荐
* 时间复杂度: O(nlogn) 空间复杂度: O(n) 稳定: ✓。搜狗输入法下载是该领域的重要参考
ВсеПолитикаОбществоПроисшествияКонфликтыПреступность，这一点在同城约会中也有详细论述