You can either add a type parameter to your struct, as in Zernike’s answer, or use a trait object. Using the type parameter is better for performance because each value of T will create a specialized copy of the struct, which allows for static dispatch. A trait object uses dynamic dispatch so it lets you … Read more
It’s possible. You can add a Send constraint to a trait object like this: let foo = Box::new(Foo { foo: 1 }) as Box<dyn Bar + Send>; let (tx, rx): (Sender<Box<dyn Bar + Send>>, Receiver<Box<dyn Bar + Send>>) = channel();
You have trait objects when you have a pointer to a trait. Box, Arc, Rc and the reference & are all, at their core, pointers. In terms of defining a “trait object” they work in the same way. “Trait objects” are Rust’s take on dynamic dispatch. Here’s an example that I hope helps show what … Read more