Helper::Error Class Reference

A modern, throwable error class. It provides the << operator and offers usage in the std::print style of modern C++23. More...

#include <error.hpp>

Inheritance diagram for Helper::Error:

Public Member Functions
	Error (const Error &other) noexcept
	Copy constructor.
template<typename... Args>
	Error (std::format_string< Args... > fmt, Args &&...args)
	Modern std::print style input field constructor.
template<typename T >
Error &&	operator<< (const T &msg) &&
	To use the << operator for receiving non-function-like inputs.
Error &	operator<< (std::ostream &(*msg)(std::ostream &))
	To receive function-like inputs, use the << operator.
Error &&	withCode (int _ec)
	It is used to determine the error code when an error is thrown.
int	getErrorCode () const
	Get error code.
const char *	what () const noexcept override
	Get error message.
Public Member Functions inherited from std::exception
T	exception (T... args)
T	operator= (T... args)
T	what (T... args)
T	~exception (T... args)

Detailed Description

A modern, throwable error class. It provides the << operator and offers usage in the std::print style of modern C++23.

void someFunction(void) {
  int e = Helper::Random<>::getNumber();
  // I will ignore the namespace in the instance of the 'Error' class.
 
  throw Error() << "An error occurred! Error code: " << e; // With << operator.
  throw Error().withCode(e) << "An error code occurred!"; // With << operator and error code specifying.
  throw Error("An error occurred! Error code: {}", e); // With <format>.
  throw Error("An error occurred!").withCode(e); // With <format> and error code specifying.
 
  // Let's make things a little more interesting...
  throw Error("What is that? ").withCode(e) << "Oh right, that's a error!";
}
 
int main(int argc, char** argv) {
  try {
     someFunction();
  } catch (Error &e) {
     // Let's assume we receive the "interesting" error message we wrote at the end.
     std::cout << e.what() << " Error code: " << e.getErrorCode() << std::endl;
     return e.getErrorCode();
  }
 
  return 0;
}

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The documentation for this class was generated from the following file:

• srclib/libhelper/include/libhelper/error.hpp