endSync() { closed = true; return totalBytes; },
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，这一点在WPS官方版本下载中也有详细论述
This is not limited to critical systems. Any non-trivial engineering project where bugs are expensive (which is most of them) accelerates when correctness is cheap.，这一点在体育直播中也有详细论述
Clean Architecture (from blog.cleancoder.com )