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.
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2022年，公司榨菜销量降为11.78万吨，2023年降至11.33万吨，2024年进一步降至11.14万吨，连续三年下滑；2025年上半年，榨菜销量为5.93万吨，同比仍下滑1%。。业内人士推荐夫子作为进阶阅读
Associativity: when merging three (or more) states, it doesn’t matter which are merged first; (A ∨ B) ∨ C = A ∨ (B ∨ C). If Alice receives states from both Bob and Carol, she can merge them into her own state in any order and the result will be the same.4
After two months, we receive an email from Meta’s spokesperson in London, Joyce Omope. The letter does not directly answer our questions, but explains how data is transferred from the glasses to the user’s mobile app.