std::match_results<BidirIt,Alloc>::length - cppreference.com (original) (raw)

| 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 nth 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.

[edit] Parameters

[edit] Return value

The length of the specified match or sub-match.

[edit] Example

[edit] See also

| | returns specified sub-match (public member function) [edit] | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | | returns the length of the match (if any) (public member function of std::sub_match) [edit] |