Only if you don't need null-termination. I suppose, should you decide to make direct fwrite/write/memcpy calls using its size you can avoid even needing the nul

Only if you don't need null-termination. I suppose, should you decide to make direct fwrite/write/memcpy calls using its size you can avoid even needing the null terminus, but a lot of code requires a null-terminated string. I think a std::string_view would bring in more opportunities to break code than make things easier.