Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
我们可以去宽容人，却不可视他人宽容为理所当然。宽容他人，是放过别人；收敛自己，是成全自己，多了温和，多了尊重，多了友谊，多了互帮互利。时时自牧，你无需向任何人索取宽容，因为你早已让身边的人甘愿以温柔相待。。关于这个话题，爱思助手下载最新版本提供了深入分析
，这一点在safew官方版本下载中也有详细论述
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