1.5 KiB
1.5 KiB
[re.results.size]
28 Text processing library [text]
28.6 Regular expressions library [re]
28.6.9 Class template match_results [re.results]
28.6.9.4 Size [re.results.size]
size_type size() const;
Returns: One plus the number of marked sub-expressions in the regular expression that was matched if *this represents the result of a successful match.
Otherwise returns 0.
[Note 1:
The state of a match_results object can be modified only by passing that object to regex_match or regex_search.
Subclauses [re.alg.match] and [re.alg.search] specify the effects of those algorithms on their match_results arguments.
â end note]
size_type max_size() const;
Returns: The maximum number of sub_match elements that can be stored in *this.
bool empty() const;
Returns: size() == 0.