deductionguidesforstdbasic_regex(3)

deductionguidesforstd::basic_regex - deductionguidesforstd::basic_regex

Synopsis

Defined in header <regex> template<class ForwardIt> basic_regex(ForwardIt, ForwardIt, (since C++17) std::regex_constants::syntax_option_type = std::regex_constants::ECMAScript) -> basic_regex<typename std::iterator_traits<ForwardIt>::value_type>;

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 }