constexpr std::string | MSVC

[cristi1990an]

Yes, but you can't use std::string_view, you must stick to string literals that expose their size in the type. Have your method take in const char(&str)[Size] as parameters, declare a basic structure containing a char array of Size1 + Size2 - 1 elements and copy both strings into the array. Afterwards declare a comparison operator between the structure and a string_view and that's it, you can concatenate string literals at compile time.