Trait WalkTypeAbleClone 

pub trait WalkTypeAbleClone<X, Y>
where
    X: Copy + TryInto<Positive> + AddAssign + Display,
    Y: TryInto<Positive> + Display + Clone,
{
    // Required method
    fn clone_box(&self) -> Box<dyn WalkTypeAble<X, Y>>;
}

Object-safe helper trait that exposes a Clone-compatible operation for WalkTypeAble trait objects.

Clone::clone requires Self: Sized, so it cannot be invoked through dyn WalkTypeAble<X, Y> directly. WalkTypeAbleClone::clone_box returns an owned Box<dyn WalkTypeAble<X, Y>> instead, which lets the generic Clone for Box<dyn WalkTypeAble<X, Y>> implementation work uniformly for any concrete walker that is Clone + 'static.

You should never implement this trait by hand: a blanket impl covers every T: WalkTypeAble<X, Y> + Clone + 'static. Just #[derive(Clone)] on your concrete walker and the trait object gains Clone for free.

Required Methods

fn clone_box(&self) -> Box<dyn WalkTypeAble<X, Y>>

Returns a boxed clone of this walker as a trait object.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T, X, Y> WalkTypeAbleClone<X, Y> for T

where T: 'static + WalkTypeAble<X, Y> + Clone, X: Copy + TryInto<Positive> + AddAssign + Display, Y: TryInto<Positive> + Display + Clone,