31 Regular expressions library [re]

31.10 Class template match_­results [re.results]

31.10.5 match_­results formatting [re.results.form]

template <class OutputIter> OutputIter format( OutputIter out, const char_type* fmt_first, const char_type* fmt_last, regex_constants::match_flag_type flags = regex_constants::format_default) const;
Requires: ready() == true and OutputIter shall satisfy the requirements for an Output Iterator.
Effects: Copies the character sequence [fmt_­first, fmt_­last) to OutputIter out.
Replaces each format specifier or escape sequence in the copied range with either the character(s) it represents or the sequence of characters within *this to which it refers.
The bitmasks specified in flags determine which format specifiers and escape sequences are recognized.
Returns: out.
template <class OutputIter, class ST, class SA> OutputIter format( OutputIter out, const basic_string<char_type, ST, SA>& fmt, regex_constants::match_flag_type flags = regex_constants::format_default) const;
Effects: Equivalent to:
return format(out, fmt.data(), fmt.data() + fmt.size(), flags);
template <class ST, class SA> basic_string<char_type, ST, SA> format( const basic_string<char_type, ST, SA>& fmt, regex_constants::match_flag_type flags = regex_constants::format_default) const;
Requires: ready() == true.
Effects: Constructs an empty string result of type basic_­string<char_­type, ST, SA> and calls:
format(back_inserter(result), fmt, flags);
Returns: result.
string_type format( const char_type* fmt, regex_constants::match_flag_type flags = regex_constants::format_default) const;
Requires: ready() == true.
Effects: Constructs an empty string result of type string_­type and calls:
format(back_inserter(result), fmt, fmt + char_traits<char_type>::length(fmt), flags);
Returns: result.