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Lazy DFAs (2010) are a clever optimization to mitigate the O(2^m) blowup of DFA construction, by only constructing the states that you actually visit. lazy DFAs reduce the theoretical automata construction time to either O(2^m) or O(n), whichever is lower. you could argue that it’s theoretically no longer linear time, since you could have a regex that creates a new state for every character in the input, but in practice you will keep revisiting the same states. for all intents and purposes it behaves more like O(n) with some initial wind-up time. the main downside of lazy DFAs is that they are more complex to implement, and you have to ship a compiler as part of your regex algorithm. i want to highlight Rust regex and RE2 as excellent implementations of this approach, which you can also see in the benchmarks.。哔哩哔哩对此有专业解读
Фото: Shatokhina Natalia / news.ru / Globallookpress.com，详情可参考电影
In the meantime, U.S. exporters will “definitely profit more,” Utting said. Nearly 15% of U.S. LNG volumes are uncontracted and can be sold on spot markets at higher prices. Also, many of the LNG buyers are Big Oil giants or global commodity trading houses that can redirect the volumes as needed. They just can’t increase the volumes much at all.。clash下载 - clash官方网站是该领域的重要参考
Жители Санкт-Петербурга устроили «крысогон»17:52