* Jonathan Wakely:
> Where __detail::__lookup_collatename is a non-template function like
> this:
>
> inline void
> __lookup_collatename(string& __name)
> {
> static const char* const __collatenames[] =
> {
> "NUL",
> "SOH",
> ...
> "tilde",
> "DEL",
> };
>
> for (const auto& __it : __collatenames)
> if (__s == __it)
> {
> __s.assign(1, static_cast<char>(&__it - __collatenames));
> return;
> }
>
> __s.clear();
> }
>
>
> This way we only call narrow/widen when we don't already have a string
> of char, and we only emit that array of strings into the binary once.
You could also use "NUL\0" "SOH\0" … "\0\0", and use explicitly strlen
and memcmp calls during the iteration. This avoids adding dozens of
run-time relocations.
