Trait DynCastExtAdvHelper 

pub trait DynCastExtAdvHelper<F, T>
where
    F: ?Sized,
    T: ?Sized,
{
    type Target;
    type Source;

    // Required method
    fn _dyn_cast(self) -> Result<Self::Target, Self::Source>;
}

Used to implement DynCastExt.

Required Associated Types

type Target

The wanted trait object that is returned if the cast succeeded.

type Source

The original trait object that is returned if the cast failed.

Required Methods

fn _dyn_cast(self) -> Result<Self::Target, Self::Source>

This method is used to cast from one trait object type to another.

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl<'a, T, F, A> DynCastExtAdvHelper<F, T> for &'a A

where T: 'static + ?Sized, F: 'static + GetDynCastConfig<T> + ?Sized, A: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + ?Sized,

type Target = &'a T

type Source = &'a F

fn _dyn_cast( self, ) -> Result<<&'a A as DynCastExtAdvHelper<F, T>>::Target, <&'a A as DynCastExtAdvHelper<F, T>>::Source>

impl<'a, T, F, A> DynCastExtAdvHelper<F, T> for &'a mut A

where T: 'static + ?Sized, F: 'static + GetDynCastConfig<T> + ?Sized, A: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + ?Sized,

type Target = &'a mut T

type Source = &'a mut F

fn _dyn_cast( self, ) -> Result<<&'a mut A as DynCastExtAdvHelper<F, T>>::Target, <&'a mut A as DynCastExtAdvHelper<F, T>>::Source>

impl<T, F, A> DynCastExtAdvHelper<F, T> for Box<A>

where T: 'static + ?Sized, F: 'static + GetDynCastConfig<T> + ?Sized, A: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + ?Sized,

Available on crate feature alloc only.

type Target = Box<T>

type Source = Box<F>

fn _dyn_cast( self, ) -> Result<<Box<A> as DynCastExtAdvHelper<F, T>>::Target, <Box<A> as DynCastExtAdvHelper<F, T>>::Source>

impl<T, F, A> DynCastExtAdvHelper<F, T> for Rc<A>

where T: 'static + ?Sized, F: 'static + GetDynCastConfig<T> + ?Sized, A: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + ?Sized,

Available on crate feature alloc only.

type Target = Rc<T>

type Source = Rc<F>

fn _dyn_cast( self, ) -> Result<<Rc<A> as DynCastExtAdvHelper<F, T>>::Target, <Rc<A> as DynCastExtAdvHelper<F, T>>::Source>

Implementors

impl<T, F, A> DynCastExtAdvHelper<F, T> for Arc<A>

where T: 'static + ?Sized, F: 'static + GetDynCastConfig<T> + ?Sized, A: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + ?Sized,

Available on crate feature alloc only.

type Target = Arc<T>

type Source = Arc<F>