Top 21 C++ constexpr Projects

constexpr

• Add a project

1. compile-time-regular-expressions

   1 29 3,545 7.4 C++

   Compile Time Regular Expression in C++

   

   Project mention: Show HN: Less Slow C++ | news.ycombinator.com | 2025-04-18

   The problem can occur in general if there is a greedy match within the regex: https://github.com/hanickadot/compile-time-regular-expressio...

   Although it looks like that this got fixed for simple patterns.

2. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. constexpr-8cc

   2 2 804 3.9 C++

   Compile-time C Compiler implemented as C++14 constant expressions

   

4. gcem

   3 3 773 5.2 C++

   A C++ compile-time math library using generalized constant expressions

   

5. hof

   4 1 510 1.1 C++

   Higher-order functions for c++ (by boostorg)

   

6. daw_json_link

   5 25 487 8.4 C++

   Fast, convenient JSON serialization and parsing in C++

   

   Project mention: Enum class improvements for C++17, C++20 and C++23 | news.ycombinator.com | 2024-08-04

   https://github.com/beached/daw_json_link/blob/release/docs/c... :

     include 

7. uni-algo

   6 4 294 8.9 C++

   Unicode Algorithms Implementation for C/C++

   

8. snitch

   7 4 282 8.4 C++

   Lightweight C++20 testing framework. (by snitch-org)

   

9. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

10. cthash

    8 2 215 4.9 C++

    constexpr implementation of SHA-2 and SHA-3 family of hashes

    

11. eternal

    9 1 210 10.0 C++

    A C++14 compile-time/constexpr map and hash map with minimal binary footprint (by mapbox)

    

12. lift

    10 1 198 0.0 C++

    constexpr C++17 library for simplifying higher order functions in application code (by rollbear)

    

13. constexpr-sql

    11 1 142 0.0 C++

    Header only library that parses and plans SQL queries at compile time

    

14. bitpacker

    12 1 122 0.0 C++

    type-safe and low-boilerplate bit level serialization

    

15. bitset2

    13 4 118 2.2 C++

    std::bitset with constexpr implementations plus additional features.

    

16. milo

    14 5 75 4.1 C++

    Cryptography library for modern C++.

    

17. bit_set

    15 1 44 7.9 C++

    Rebooting the std::bitset franchise

    

18. uninttp

    16 1 27 7.3 C++

    A universal type for non-type template parameters for C++20 or later.

    

19. arby

    17 2 8 5.0 C++

    Arbitrary precision arithmetic in C++, even at compile-time

    

20. enumerate

    18 1 7 2.6 C++

    Header-only, single file, C++11 compatible version of `enumerate`. (by hipony)

    

21. ndvec

    19 1 2 8.2 C++

    constexpr n-dimensional Euclidean vector

    

22. constyaml

    20 1 2 0.0 C++

    constexpr (strict)yaml parser

    

23. codlili

    21 1 2 10.0 C++

    Constexpr STL-style containers

    

24. SaaSHub

    www.saashub.com featured

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    

C++ constexpr related posts

• Implementing Regular Expressions in TypeScript Types (Badly)

  3 projects | news.ycombinator.com | 20 Oct 2024

• Challenges creatinga lookup table class that instantiates at compile time and is stored in flash.

  1 project | /r/cpp_questions | 19 Jun 2023

• What are thoughts on removing regular expression from the standard library?

  1 project | /r/cpp | 8 Jun 2023

• Long switch statements. Is there a better way?

  2 projects | /r/cpp | 8 Mar 2023

• Verify all characters are same except a few

  1 project | /r/cpp_questions | 9 Mar 2023

• Constexpr regex parser!

  2 projects | /r/cpp | 14 Feb 2023

• Constexpr implementation of SHA-2 and SHA-3 family of hashes

  1 project | /r/u_Sufficient-Dirt4517 | 7 Feb 2023
• A note from our sponsor - SaaSHub
  www.saashub.com | 16 May 2025

  SaaSHub helps you find the best software and product alternatives Learn more →

Index

Sponsored

InfluxDB – Built for High-Performance Time Series Workloads

InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

www.influxdata.com

Do not miss the trending C++ projects with our weekly report!