UDLs have one other huge benefit: you're far less likely to accidentally write a use-after-free, since otherwise there's no way to distinguish between being pas

UDLs have one other huge benefit: you're far less likely to accidentally write a use-after-free, since otherwise there's no way to distinguish between being passed a string literal and being passed some other random char array. Between UDLs, a little CRTP to provide the same API across a set of classes, and `#pragma GCC poison`ing half the C library, I found it very easy to completely eliminate all legacy string-handling code in a codebase.