std::match_results<BidirIt,Alloc>::length
Min standard notice:
Returns the length of the specified sub-match.
# Declarations
difference_type length( size_type n = 0 ) const;
(since C++11)
# Parameters
n: integral number specifying which match to examine
# Return value
The length of the specified match or sub-match.
# Example
This section is incompleteReason: no example