Trait AsAny

pub trait AsAny {
    // Required method
    fn as_any(&self) -> &dyn Any;
}

Helper trait to cast a &dyn T to a &dyn Any.

In Rust all types that are 'static implement std::any::Any and thus can be casted to a &dyn Any. But once you create a trait object, the type is erased and thus so is the implementation for Any. This trait essentially adds a types’ Any impl to the vtable created when casted to trait object, if AsAny is a supertrait.

See Value for an example of using AsAny.

Required Methods

fn as_any(&self) -> &dyn Any

Implementors

impl<T: Any> AsAny for T