< cpp‎ | regex‎ | sub match
int compare( const sub_match& m ) const;
(1) (since C++11)
int compare( const string_type& s ) const;
(2) (since C++11)
int compare( const value_type* c ) const;
(3) (since C++11)
1) Compares two sub_match directly by comparing their underlying character sequences. Equivalent to str().compare(m.str()).
2) Compares a sub_match with a std::basic_string. Equivalent to str().compare(s).
3) Compares a sub_match with a null-terminated sequence of the underlying character type pointed to by s. Equivalent to str().compare(c).

This function is infrequently used directly by application code. Instead, one of the non-member comparison operators are used.


m - a reference to another sub_match
s - a reference to a string to compare to
c - a pointer to a null-terminated character sequence of the underlying value_type to compare to

Return value

A value less than zero if this sub_match is less than the other character sequence, zero if the both underlying character sequences are equal, greater than zero if this sub_match is greater than the other character sequence.


See also

compares two strings
(public member function of std::basic_string<CharT,Traits,Allocator>)
converts to the underlying string type
(public member function)
compares two sub_match objects
(function template)