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..).
He said he would examine the evidence "thoroughly" ahead of his final decision in March 2026.
，这一点在91视频中也有详细论述
36氪：你觉得未来外骨骼的场景和产品定义趋势是怎样？产品会泛化、一两款产品包打天下；还是要针对不同用户群推出更细分的产品？，这一点在safew官方版本下载中也有详细论述
Солнце выбросило гигантский протуберанец размером около миллиона километров02:48