std::match_results::begin, std::match_results::cbegin

From cppreference.com
iterator begin();
(since C++11)
const_iterator begin() const;
(since C++11)
const_iterator cbegin() const;
(since C++11)

Returns an iterator to the beginning of the list of sub-matches. If match was successful, the iterator will point to the entire matched expression.

Contents

[edit] Parameters

(none)

[edit] Return value

Iterator to the first sub-match.

[edit] Exceptions

noexcept specification:  
noexcept
  (since C++11)

[edit] Complexity

Constant

[edit] See also

returns iterator to the end of the list of sub-matches
(public member function)