std-source-location – Tarik Billa

How to use source_location in a variadic template function?

March 20, 2023 by Tarik

The first form can be made to work, by adding a deduction guide: template <typename… Ts> struct debug { debug(Ts&&… ts, const std::source_location& loc = std::source_location::current()); }; template <typename… Ts> debug(Ts&&…) -> debug<Ts…>; Test: int main() { debug(5, ‘A’, 3.14f, “foo”); } DEMO

Does C++20 mandate source code being stored in files?

December 31, 2022 by Tarik

No, source code doesn’t have to come from a file (nor go to a file). You can compile (and link) C++ completely within a pipe, putting your compiler in the middle, e.g. generate_source | g++ -o- -xc++ – | do_something_with_the_binary and it’s been like that for decades. See also: Is it possible to get GCC … Read more