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std::match_results::length(3) | C++ Standard Libary | std::match_results::length(3) |
NAME¶
std::match_results::length - std::match_results::length
Synopsis¶
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().
Parameters¶
n - integral number specifying which match to examine
Return value¶
The length of the specified match or sub-match.
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>)
2024.06.10 | http://cppreference.com |