Top 3 C metalang99 Projects

datatype99

29 791 3.5 C

Algebraic data types for C99
metalang99

42 765 3.7 C

Full-blown preprocessor metaprogramming

Project mention: How to convert an enum to string in C++ | news.ycombinator.com | 2023-09-30

There are also other approaches. Macro variants making use of `__VA_ARGS__` would be probably the best trade-off. If you want a slightly more ergonomic syntax, something like Metalang99 [1] will help (and the author even wrote a post about this exact subject [2]). Codegen is another option which may work better than other options depending on the situation and exact implementation strategy. And there is always the Reflection TS [3], which may or may not be incorporated to C++26...
[1] https://github.com/Hirrolot/metalang99
[2] https://hirrolot.github.io/posts/pretty-printable-enumeratio...
[3] https://en.cppreference.com/w/cpp/experimental/reflect

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interface99

15 262 1.9 C

Full-featured interfaces for C99

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).