std::match_results<BidirIt,Alloc>:: length

difference_type length ( size_type n = 0 ) const ;		(since C++11)

Returns the length of the specified sub-match.

If n == 0 , the length of the entire matched expression is returned.

If n > 0 && n < size ( ) , the length of n ^th sub-match is returned.

if n >= size ( ) , a length of the unmatched match is returned.

The call is equivalent to ( * this ) [ n ] . length ( ) .

ready() must be true . Otherwise, the behavior is undefined.

Contents 1 Parameters 2 Return value 3 Example 4 See also

Parameters

n

-

integral number specifying which match to examine

Return value

The length of the specified match or sub-match.

Example

This section is incomplete Reason: no example

See also

operator[]	returns specified sub-match (public member function)
length	returns the length of the match (if any) (public member function of std::sub_match<BidirIt> )