73 std::string::const_iterator ai = a.begin();
74 std::string::const_iterator bi = b.begin();
76 while (ai != a.end() && bi != b.end())
81 if (ca == cb)
continue;
82 if (ca < cb)
return -1;
86 if (ai == a.end() && bi != b.end())
return +1;
87 else if (ai != a.end() && bi == b.end())
return -1;