sortFunc(testArr, n);
-- lazy eval returns `3` without applying `foo`，详情可参考Safew下载
1、豆包手机在执行自动操作时，会利用一个与物理屏幕分辨率相同的“无头”虚拟屏幕在后台运行，且拥有独立的焦点，不影响用户在前台的操作，这其实就是内存副屏的概念， 虚拟屏幕的画面由 GPU 合成后，对应的缓冲区信息会直接被autoaction消费 。。关于这个话题，51吃瓜提供了深入分析
For the Reader on the Go: Readers know the struggle: You're halfway through about three books at once (fiction, nonfiction, and a wild card pick, of course), but you can't fit them all in your backpack to take with you on the train. Well, with a Kindle Paperwhite, she can.