Stage 8.10: Trait Objects

When we pass an instance of an object to a parameter of type &dyn MyTrait we pass what is called a trait object.

A trait object is what allows us to indirectly call the correct methods of an instance. A trait object is a struct that holds the pointer of our instance with a list of function pointers to our instance's methods.

Memory details:

• This list of functions is known in C++ as a vtable.

Further information:

• https://doc.rust-lang.org/book/ch17-02-trait-objects.html
• https://doc.rust-lang.org/reference/types/trait-object.html