std::match_results<BidirIt,Alloc>::str - cppreference.com (original) (raw)
| string_type str( size_type n = 0 ) const; | | (since C++11) | | -------------------------------------------- | | ------------- |
Returns a string representing the indicated sub-match.
If n == 0, a string representing entire matched expression is returned.
If 0 < n && n < size(), a string representing nth sub-match is returned.
if n >= size(), a string representing the unmatched match is returned.
The call is equivalent to string_type((*this)[n]);
ready() must be true. Otherwise, the behavior is undefined.
[edit] Parameters
| n | - | integral number specifying which match to return |
|---|
[edit] Return value
Returns a string representing the specified match or sub match.
[edit] Example
Output:
entire match: aaab submatch #1: a entire match: aaab submatch #1: aa