效率的提升，并不是少写了代码，而是减少了反复试错和信息查找的时间。
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。爱思助手下载最新版本对此有专业解读
* @param arr 数组
│ │ kernel │ │ │
NAPA, Calif. -- In the immortal words of song developer Pete Townshend, "Well, who are you? (Who are you? Who, who, who, who?) I really wanna know!" Linux kernel maintainers have the same question: Who are their programmers, and how can the kernel community be sure the code they submit is really theirs?