Multiple Dispatch in practice

[bearophile]

Sergey Gromov:

> You overcomplicate.
> ...
> interface Vehicle {
>     void collide(Vehicle v);
>     void onCollision(Car c);
>     void onCollision(Bike b);
> }

You oversemplificate :-) You have had to modify the original interface. I'll not use your version of the code. Multiple dispatch allows you to not modify the original interface, keeping changes more localized. If Car manages 5 collisions, while Bike 7, and they share just 3 collisions, your interface and classes become quite hairy...

Bye,
bearophile