read
compile-time-regular-expressions
read | compile-time-regular-expressions | |
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12 | 26 | |
54 | 3,163 | |
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0.0 | 7.0 | |
10 months ago | 7 days ago | |
C++ | C++ | |
GNU General Public License v3.0 only | Apache License 2.0 |
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read
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C++ And Beyond: Discussion - Vittorio Romeo, Kevlin Henney, Nico Josuttis & Kate Gregory - ACCU 2023
It was on the mailing list that screens proposals prior to writing papers. Basically it was for making input much easier to work with, like this: https://github.com/ShakaUVM/read
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The Future of Boost by Vinnie Falco
I have thought about submitting a library of mine (https://github.com/ShakaUVM/read) for standardization or inclusion in Boost. Basically it does for input what format did for output - replace the stream system with something more functional.
- Keep getting a loop when I enter a letter instead of a number.
- What are some cool modern libraries you enjoy using?
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Read a string from user
Using readlib:
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Steams operations order?
That's why I wrote my read library (https://github.com/ShakaUVM/read). You can just do:
- Why is my program skipping a cin input?
- Why am I able to capture data from text file with std::ifstream with either std::getline or extraction operator >> but not unable to do so by going back and forth between the two??
- std::cin doesn't work after entering the wrong input
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What (relatively) easily to implement features would you like to see in c++23.
5) Make input come from functions rather than call by reference, such as what I did here: https://github.com/ShakaUVM/read
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?
frozen - a header-only, constexpr alternative to gperf for C++14 users
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.
Boost - Super-project for modularized Boost
consteval-huffman - Compile-time Huffman coding compression using C++20
rust - Empowering everyone to build reliable and efficient software.
xorstr - heavily vectorized c++17 compile time string encryption.
PEGTL - Parsing Expression Grammar Template Library
neo-fun - Some library components that didn't quite fit anywhere else...
stb - stb single-file public domain libraries for C/C++
C++ Format - A modern formatting library
Allegro - The official Allegro 5 git repository. Pull requests welcome!
staticvec - Implements a fixed-capacity stack-allocated Vec alternative backed by an array, using const generics.