std::regex_error(3) C++ Standard Libary std::regex_error(3) NAME std::regex_error - std::regex_error Synopsis Defined in header <regex> class regex_error; (since C++11) Defines the type of exception object thrown to report errors in the reg- ular expressions library. std-regex error-inheritance.svg Inheritance diagram Member functions constructor constructs a regex_error object (public member function) operator= replaces the regex_error object (public member function) code gets the std::regex_constants::error_type for a regex_er- ror (public member function) Inherited from std::runtime_error Inherited from std::exception Member functions destructor destroys the exception object [virtual] (virtual public member function of std::exception) what returns an explanatory string [virtual] (virtual public member function of std::exception) Example // Run this code #include <iostream> #include <regex> int main() { try { std::regex re("[a-b][a"); } catch (const std::regex_error& e) { std::cout << "regex_error caught: " << e.what() << '\n'; if (e.code() == std::regex_constants::error_brack) std::cout << "The code was error_brack\n"; } } Possible output: regex_error caught: The expression contained mismatched [ and ]. The code was error_brack http://cppreference.com 2024.06.10 std::regex_error(3)
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