Get the pretty typename of any C++ type at compile time. Demo: https://godbolt.org/z/vsaKsecW6

type_name.hpp

#include <string_view>

template <typename T>
#if __cpp_consteval
consteval
#else
constexpr
#endif
auto type_name() {
#ifdef __clang__
    std::string_view name = __PRETTY_FUNCTION__;
    std::string_view prefix = "auto type_name() [T = ";
    std::string_view suffix = "]";
#elif defined __GNUC__
    std::string_view name = __PRETTY_FUNCTION__;
    std::string_view prefix = "constexpr auto type_name() [with T = ";
    std::string_view suffix = "]";
#elif defined _MSC_VER
    std::string_view name = __FUNCSIG__;
    std::string_view prefix = "auto __cdecl type_name<";
    std::string_view suffix = ">(void)";
#else
#   error Unsupported compiler.
#endif
    name.remove_prefix(prefix.size());
    name.remove_suffix(suffix.size());
    return name;
}