fmt/core.h has been heavily optimized for build speed and is usually faster to compile than equivalent iostream code: https://github.com/fmtlib/fmt?tab=readme-o

fmt/core.h has been heavily optimized for build speed and is usually faster to compile than equivalent iostream code: https://github.com/fmtlib/fmt?tab=readme-ov-file#compile-time-and-code-bloat https://github.com/fmtlib/fmt?tab=readme-ov-file#compile-tim.... Once modularized std is available we might be able to be compete with printf.