trait Trait {}
#[derive(Clone)]
struct Type {
inner: Box<dyn Trait>
}
error[E0277]: the trait bound `dyn Trait: Clone` is not satisfied
--> x.rs:5:5
|
3 | #[derive(Clone)]
| ----- in this derive macro expansion
4 | struct Type {
5 | inner: Box<dyn Trait>
| ^^^^^^^^^^^^^^^^^^^^^ the trait `Clone` is not implemented for `dyn Trait`
|
Cool, I'll just specify that anything implementing Trait must also implement Clone:
trait Trait: Clone {}
#[derive(Clone)]
struct Type {
inner: Box<dyn Trait>
}
error[E0038]: the trait `Trait` cannot be made into an object
--> x.rs:5:16
|
5 | inner: Box<dyn Trait>
| ^^^^^^^^^ `Trait` cannot be made into an object
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> x.rs:1:14
|
1 | trait Trait: Clone {}
| ----- ^^^^^ ...because it requires `Self: Sized`
| |
| this trait cannot be made into an object...
How am I meant to be able to make a trait that can be used as the type signature of fields in structs that are cloneable?
