Pinned

1. variant

   C++17 `std::variant` for C++11/14/17

   C++ 505 66

2. patterns

   This is an experimental library that has evolved to P1371, proposed for C++23.

   C++ 514 26

3. wg21

   WG21: C++ Standards Committee Papers

   Python 88 23

4. format

   Compile-time Checked, Type-Safe Formatting in C++14

   C++ 32 5