Trait Downcast 

pub trait Downcast<T: ?Sized>: Sized {
    type Wrapped;

    // Required method
    fn downcast(self) -> Result<Self::Wrapped, Self>;
}

Any wrapper around a class that can be downcast into a child class.

Required Associated Types

type Wrapped

Required Methods

fn downcast(self) -> Result<Self::Wrapped, Self>

Downcast into a child class. Returns Err(self) if the cast is invalid.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors

impl<T: ?Sized + Class, U: ?Sized + Class> Downcast<U> for ClassBox<T>

where for<'a> &'a mut T: Downcast<U, Wrapped = &'a mut U>,

type Wrapped = ClassBox<U>