bsl::basic_string::replace

Replace the substring in the range starting at the specified first position and ending right before the specified last position with the characters in the range starting at the specified stringFirst and ending right before the specified stringLast iterator, both of the (template parameter) type INPUT_ITER. Return a reference providing modifiable access to this string. The behavior is undefined unless first and last are both within the range [cbegin() .. cend()], first <= last, and stringFirst and stringLast refer to a sequence of valid values where stringFirst is at a position at or before stringLast.