4 ms·

The enum example in the article

• HarHarVeryFunny 4y ago
  OK, that's an interesting language feature, but I can't say it's something that I've often wanted to do in C++. Of course C++ does have std::variant and std::any, although I'm not really a fan. I'd tend to (and have) just use a class that contains the variants and an enum to track which one, then setters and getters. event.SetKeyPress(ch); event.SetMouseButtonPress(pos, but); etc ... switch (event.type) { case EvKeyPress: ch = event.GetKeyPress();
  • HarHarVeryFunny 4y ago
    Of course the Rust features being used by that Event type are runtime polymorphism and type introspection, so another obvious C++ approach would be just to use a pointer to a virtual based class including the type, then: switch (event->type) { case EvKeyPressEvent: { auto kpe - dynamic_cast<KeyPressEvent*>(event) ... } break; }