64     return npos;  in find()
69   return xpos + s.length_ <= length_ ? xpos : npos;  in find()
74     return npos;  in find()
77   return result != ptr_ + length_ ? static_cast<size_t>(result - ptr_) : npos;  in find()
82     return npos;  in rfind()
89   return result != last ? static_cast<size_t>(result - ptr_) : npos;  in rfind()
94     return npos;  in rfind()
102   return npos;  in rfind()
125     return npos;  in find_first_of()
138   return npos;  in find_first_of()
144     return npos;  in find_first_not_of()
160   return npos;  in find_first_not_of()
165     return npos;  in find_first_not_of()
172   return npos;  in find_first_not_of()
177     return npos;  in find_last_of()
191   return npos;  in find_last_of()
197     return npos;  in find_last_not_of()
215   return npos;  in find_last_not_of()
220     return npos;  in find_last_not_of()
228   return npos;  in find_last_not_of()
237 const StringPiece::size_type StringPiece::npos = size_type(-1);  member in StringPiece