rfind
size_type rfind (const basic_string& str, size_type pos = npos) const
{ return rfind (str.data(), pos, str.length()); }
size_type rfind (const charT* s, size_type pos, size_type n) const;
size_type rfind (const charT* s, size_type pos = npos) const
{ return rfind (s, pos, traits::length (s)); }
size_type rfind (charT c, size_type pos = npos) const;
{ return rfind (c, pos); }
string::size_type pos = normalizedPath.rfind('/');