stdx - C++ Standard Extensions and Polyfill

stdx is a C++ header-only library that:

• backports to C++17 some standard library features from C++20 and beyond
• adds some useful extra utilities that are missing from the standard

Some of the extras are available only with C++20 or later.

stdx supports:

• clang 14 through 21
• gcc 12 through 14

See the full documentation.