Insert at the specified position in this string each CHAR_TYPE object in the specified values initializer list, and return an iterator to the first newly-inserted character. If an exception is thrown (other than by the copy constructor, move constructor, assignment operator, and move assignment operator of CHAR_TYPE), *this is unaffected. The behavior is undefined unless position is an iterator in the range [begin() .. end()] (both endpoints included).
Declared in <bslstl_string.h>
iterator
insert(
const_iterator position,
std::initializer_list<char16_t> values);