What is fmt
C++ had two bad options for turning values into text: printf, which is fast and terse but
Installation
fmt can be dropped into a project as header-only, with no build step at all, or built and linked as
std::format
std::format is fmt, standardised. P0645 took fmt's design into the C++20 standard library almost
vs printf/iostreams
The two incumbents fail in opposite directions — printf trades safety for speed and brevity,