find_first_of
using __STD::find_first_of;
size_type find_first_of (const basic_string& str, size_type pos = 0) const
{ return find_first_of (str.data(), pos, str.length()); }
size_type find_first_of (const charT* s, size_type pos, size_type n) const;
size_type find_first_of (const charT* s, size_type pos = 0) const
{ return find_first_of (s, pos, traits::length (s)); }
size_type find_first_of (charT c, size_type pos = 0) const
pos = origName.find_first_of("::", oldpos);
pos = origName.find_first_of("::", oldpos);