around a year ago, we built a regex engine in F# that not only outperformed the ones in dotnet, but went above and beyond competing with every other industrial regex engine on a large set of industry-standard benchmarks. additionally, it supports the full set of boolean operators (union, intersection, complement) and even a form of context-aware lookarounds, which no other engine has while preserving O(n) search-time complexity. the paper was published at POPL 2025, and i figured it’s time to open source the engine and share the story behind it. consider it a much more casual and chatty version of the paper, with more focus on engineering aspects that went into it.
“我们在一线考察时发现，这些整改举措切实解决了群众的实际困难，实现了从解决一个问题到推动一类服务改进的跨越。”和平区委组织部副部长、区公务员局局长孙宇说。
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Зеленский заявил о запросе от США на участие Киева в ситуации на Ближнем Востоке20:47
Number (0): Everything in this space must add up to 0. The answer is 0-2, placed horizontally.