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std::match_results::length

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< cpp‎ | regex‎ | match results
Revision as of 12:18, 2 November 2012 by P12bot (Talk | contribs)

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().

Parameters

n - integral number specifying which match to examine

Return value

The length of the specified match or sub-match.

See also

Template:cpp/regex/match results/dcl list operator atTemplate:cpp/regex/sub match/dcl list length