Under the hood, BPattern builds a pattern AST using the same pattern node classes as the rewrite engine. All the original matching and rewriting machinery is still there — just wrapped in a more approachable, scriptable interface.
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。
。heLLoword翻译官方下载是该领域的重要参考
We track two categories:
store and bump up the slice length. Yay! No call to the allocator for
Овечкин продлил безголевую серию в составе Вашингтона09:40