Trait CastFrom 

pub trait CastFrom: Any + 'static {
    // Required methods
    fn ref_any(&self) -> &dyn Any;
    fn mut_any(&mut self) -> &mut dyn Any;
    fn box_any(self: Box<Self>) -> Box<dyn Any>;
    fn rc_any(self: Rc<Self>) -> Rc<dyn Any>;
}

CastFrom must be extended by a trait that wants to allow for casting into another trait.

It is used for obtaining a trait object for Any from a trait object for its sub-trait, and blanket implemented for all Sized + Any + 'static types.

Examples

trait Source: CastFrom {
    ...
}

Required Methods

fn ref_any(&self) -> &dyn Any

Returns a immutable reference to Any, which is backed by the type implementing this trait.

fn mut_any(&mut self) -> &mut dyn Any

Returns a mutable reference to Any, which is backed by the type implementing this trait.

fn box_any(self: Box<Self>) -> Box<dyn Any>

Returns a Box of Any, which is backed by the type implementing this trait.

fn rc_any(self: Rc<Self>) -> Rc<dyn Any>

Returns an Rc of Any, which is backed by the type implementing this trait.

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl CastFrom for dyn Any + 'static

fn ref_any(&self) -> &dyn Any

fn mut_any(&mut self) -> &mut dyn Any

fn box_any(self: Box<Self>) -> Box<dyn Any>

fn rc_any(self: Rc<Self>) -> Rc<dyn Any>

impl CastFrom for dyn Any + Sync + Send + 'static

fn ref_any(&self) -> &dyn Any

fn mut_any(&mut self) -> &mut dyn Any

fn box_any(self: Box<Self>) -> Box<dyn Any>

fn rc_any(self: Rc<Self>) -> Rc<dyn Any>

Implementors

impl<T: Sized + Any + 'static> CastFrom for T