std::sub_match<BidirIt>::compare - cppreference.com

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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_matches 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).

Parameters

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.

Notes

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

Example

See also