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触控能力将推动 macOS 引入全新的动态界面：系统会根据用户的操作方式在界面更大的触控模式与传统鼠标点按模式之间切换。系统还将支持与 iPhone、iPad 类似的快速滚动与双指缩放。
。关于这个话题，safew官方下载提供了深入分析
takes an array of length n and produces an array of length n
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.