南方周末：很多国家都模仿过前宗主国的文化，也有很多国家紧随美国文化，为什么唯独韩国在这个过程中如此成功？
2026-03-04 02:012026년 3월 4일 02시 01분
。关于这个话题，safew官方版本下载提供了深入分析
both of these approaches use NFAs under the hood, which means O(m * n) matching. our approach is fundamentally different: we encode lookaround information directly in the automaton via derivatives, which gives us O(n) matching with a small constant. the trade-off is that we restrict lookarounds to a normalized form (?<=R1)R2(?=R3) where R1/R2/R3 themselves don’t contain lookarounds. the oracle-based approaches support more general nesting, but pay for it in the matching loop. one open question i have is how they handle memory for the oracle table - if you read a gigabyte of text, do you keep a gigabyte-sized table in memory for each lookaround in the pattern?
Фото: Рамиль Ситдиков / РИА Новости
FT Videos & Podcasts