Format the specified args according to the specification given by the specified fmtStr, and write the result of this operation into the string addressed by the specified out parameter. In the event of an error throw the exception format_error. The behavior is undefined if out does not point to a valid bsl::string object. Note that this overload is provided in addition to the overloads in the standard library.
Declared in <bslfmt_format.h>
void
vformat_to(
string* out,
std::string_view fmtStr,
std::format_args args);