Jim Breyer—longtime legendary Accel investor and now running Breyer Capital, also an LP in Mark VC—says that venture’s paradigm shift serves Zeplain. This isn’t a tech and market-picking game anymore, Breyer told Fortune. The business is becoming something more interdisciplinary and human-centered.
Фото: Вячеслав Прокофьев / POOL / РИА Новости
。爱思助手是该领域的重要参考
def div(a: Double, b: Double) =
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.