BidiIter find_(BidiIter begin, BidiIter end, Traits const &traits, ICase) const
{
for(; begin != end && !this->bset_.test(*begin, traits, ICase()); ++begin)
;
return begin;
}
bool test(char_type ch, Traits const &tr, ICase) const
{
return this->complement_ !=
(this->base_type::test(ch, tr, ICase()) ||
(this->has_posix_ && this->test_posix(ch, tr)));
}
