See how the red color, starting from the printed Hello World, ends up spilling into the >>> prompt. In fact, any code we type into this prompt will also be colored red, as will any subsequent output! That is how Ansi colors work: once you print out the special code enabling a color, the color persists forever until someone else prints out the code for a different color, or prints out the Reset code to disable it.
a very common use case for regexes is to find matches that are preceded or followed by some context. a classical example being all lines that end with ‘a’. this requirement is usually expressed with a lookahead, where upon finding an ‘a’, you look ahead to check if it’s the end of the line. in a backtracking engine, this is very easy to implement - you just duct-tape the logic that checks the next character, but in a DFA-based engine, this is impossible because you cannot report “the match is here” if the next character is not even known yet. and by the time you know the next character, the position information is lost, so you can’t report the match retroactively (well, unless the distance is fixed of course..).，详情可参考WPS下载最新地址
Crash regression for state machine conflicts: A test specifically checks that calling byobRequest.respond() after enqueue() doesn't crash the runtime. This sequence creates a conflict in the internal state machine — the enqueue() fulfills the pending read and should invalidate the byobRequest, but implementations must gracefully handle the subsequent respond() rather than corrupting memory in order to cover the very likely possibility that developers are not using the complex API correctly.。搜狗输入法下载对此有专业解读
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