There is a new edition of the book and this is an old link.
Implementing the
Deref
trait allows us to customize the behavior of the dereference operator*
. By implementingDeref
in such a way that a smart pointer can be treated like a regular reference, we can write code that operates on references and use that code with smart pointers too.
use std::ops::Deref; impl<T> Deref for MyBox<T> { type Target = T; fn deref(&self) -> &T { &self.0 } }Run
Here are the relevant sections in the new and old books: