here’s a subtle but important consequence: in RE#, rewriting your regex using boolean algebra is always safe. factor out common prefixes, distribute over union, apply de Morgan’s laws - the matches won’t change. your regex is a specification of a set of strings, and the engine faithfully finds the leftmost-longest element of that set in the input. no surprises from alternation order, no “well it depends on how PCRE explores this search tree”. just set theory.
Standard Digital
。关于这个话题，safew官方下载提供了深入分析
The solution to today's Connections #992 is...
Fix Your Timestep! (2004) Classic article on implementing a fixed timestep game loop for stable physics simulation.
DropAnnotations[int] = int