deduction guides for std::basic_regex

From cppreference.com
C++
Regular expressions library
Classes
(C++11)
(C++11)
(C++11)
Algorithms
(C++11)
(C++11)
(C++11)
Iterators
(C++11)
(C++11)
Exceptions
(C++11)
Traits
(C++11)
Constants
(C++11)
(C++11)
(C++11)
Regex Grammar
(C++11)
std::basic_regex
Defined in header <regex>
template < class ForwardIt >

basic_regex ( ForwardIt, ForwardIt,
std:: regex_constants :: syntax_option_type = std:: regex_constants :: ECMAScript )

- > basic_regex < typename std:: iterator_traits < ForwardIt > :: value_type > ;
(since C++17)

This deduction guide is provided for std::basic_regex to allow deduction from an iterator range.

Example

Run this code 
#include <regex>
#include <vector>
 
int main()
{
    std::vector<char> v = {'a', 'b', 'c'};
    std::basic_regex re(v.begin(), v.end()); // uses explicit deduction guide
}
Retrieved from " https://en.cppreference.com/mwiki/index.php?title=cpp/regex/basic_regex/deduction_guides&oldid=161255 "