Семен Александров (старший редактор отдела Мир)
NFAs are cheaper to construct, but have a O(n*m) matching time, where n is the size of the input and m is the size of the state graph. NFAs are often seen as the reasonable middle ground, but i disagree and will argue that NFAs are worse than the other two. they are theoretically “linear”, but in practice they do not perform as well as DFAs (in the average case they are also much slower than backtracking). they spend the complexity in the wrong place - why would i want matching to be slow?! that’s where most of the time is spent. the problem is that m can be arbitrarily large, and putting a large constant of let’s say 1000 on top of n will make matching 1000x slower. just not acceptable for real workloads, the benchmarks speak for themselves here.，更多细节参见同城约会
，这一点在谷歌浏览器下载中也有详细论述
Студенты нашли останки викингов в яме для наказаний14:52
The continent's Big Three, France, Germany and the UK, did manage to issue a joint statement at the weekend, warning Iran they were ready to take "defensive action" to destroy its ability to fire missiles and drones unless Tehran stopped its "indiscriminate attacks".。服务器推荐是该领域的重要参考