reco
compile-time-regular-expressions
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reco | compile-time-regular-expressions | |
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5 | 26 | |
16 | 3,157 | |
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0.0 | 7.5 | |
about 3 years ago | 3 months ago | |
TypeScript | C++ | |
MIT License | Apache License 2.0 |
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reco
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Regular Expression COmpiler - Compile a regex ahead of time to code
It seems a little weird to me that they start out targeting JS, though. Look at one of the sample generated files -- it has a little comment at the top that has the tiny regex it was generated from. I'd be shocked if that's actually faster -- that's a lot for v8 to parse and optimize, and you're hoping it'll parse/optimize it into better code than it would parsing/optimizing a tiny regex?
- Reco - Compile regular expressions to code
compile-time-regular-expressions
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Why are strings and IO so complicated?
CTRE (https://github.com/hanickadot/compile-time-regular-expressions) ranges::views (filter, transform, etc.) (C++20) str.find() + str.substr() freopen to stdin + cin >> extraction Parser libraries
- Compile time regular expression in C++
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What are thoughts on removing regular expression from the standard library?
There are suggestions that should be replaced by the high performance ctre implementation: https://github.com/hanickadot/compile-time-regular-expressions
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What's the most hilarious use of operator overloading you've seen?
operator"" can be used in a similar way to expression templates (DSLs), where the type of the resulting expression is dependent on the string contents. For example ctre makes use of this to build efficient regular expression parsers, and kumi uses this in conjunction with operator[] to make tuple indexing quite elegant
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It's easy, I swear! Once you learn a bit about it, you'll be amazed!
Check out https://github.com/hanickadot/compile-time-regular-expressions anything is possible 😂
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Verify all characters are same except a few
Yes to regex, no to std::regex. Better to use CTRE. Something like "^Hello [0-9]+ how are you" should allow checking if there's a match
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Constexpr regex parser!
You could compare your implementation with https://github.com/hanickadot/compile-time-regular-expressions and see if there are any ideas you can copy.
- Regex is comically slow. High performance alternatives? (Pattern matching for validation)
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Regex shootout updated - hyperscan 1st, Rust 2nd, std::regex dead last
std::compile_time_regex would be a nice addition. Something similar to ctre https://github.com/hanickadot/compile-time-regular-expressions Simply letting the compiler generate all the regex parsing machinery at compile time.... And benefitting from compiler optimizations, vectorization, etc...
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What are some cool modern libraries you enjoy using?
ctre
What are some alternatives?
REXS - A language for writing regular expressions.
RE2 - RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.
pattern-grab - 🤛🏻 Regular Expression Data Grabber
consteval-huffman - Compile-time Huffman coding compression using C++20
Revice - High-level regex transpiler and regex doc lib generator
xorstr - heavily vectorized c++17 compile time string encryption.
regcode - 🔷 Create regular expressions easily with code
neo-fun - Some library components that didn't quite fit anywhere else...
UltimateRegexResource - 📝 The ultimate collection of regex syntax and resources to power up your programming!
C++ Format - A modern formatting library
staticvec - Implements a fixed-capacity stack-allocated Vec alternative backed by an array, using const generics.