deduction guides for 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
#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
}
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https://en.cppreference.com/w/cpp/regex/basic_regex/deduction_guides
