Replace the substring in the range starting at the specified first position and ending right before the specified last position with the specified null-terminated characterString (of length CHAR_TRAITS::length(characterString)). Return a reference providing modifiable access to this string. The behavior is undefined unless first and last are both within the range [cbegin() .. cend()] and first <= last.
Declared in <bslstl_string.h>
basic_string<char>&
replace(
const_iterator first,
const_iterator last,
char const* characterString);