Trait FromImpl 

pub unsafe trait FromImpl<T> {
    // Required methods
    fn from_impl(value: &T) -> &Self;
    fn from_impl_mut(value: &mut T) -> &mut Self;
}

Trait for converting a sized type to an unsized one.

On stable Rust (with the ptr_meta crate feature), it can be implemented via the impl_from_impl macro. On nightly, it is implemented for all Unsize, and the impl_from_impl macro does nothing.

Safety

from_impl and from_impl_mut must return the argument, coerced to the unsized type.

Required Methods

fn from_impl(value: &T) -> &Self

fn from_impl_mut(value: &mut T) -> &mut Self

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<'a, T> FromImpl<T> for dyn Any + 'a

where T: Any + 'a,

fn from_impl(value: &T) -> &Self

fn from_impl_mut(value: &mut T) -> &mut Self

impl<'a, T> FromImpl<T> for dyn Any + Send + 'a

where T: Any + Send + 'a,

fn from_impl(value: &T) -> &Self

fn from_impl_mut(value: &mut T) -> &mut Self

impl<'a, T> FromImpl<T> for dyn Any + Send + Sync + 'a

where T: Any + Send + Sync + 'a,

fn from_impl(value: &T) -> &Self

fn from_impl_mut(value: &mut T) -> &mut Self

impl<'a, T> FromImpl<T> for dyn Error + 'a

where T: Error + 'a,

fn from_impl(value: &T) -> &Self

fn from_impl_mut(value: &mut T) -> &mut Self

impl<'a, T> FromImpl<T> for dyn Error + Send + 'a

where T: Error + Send + 'a,

fn from_impl(value: &T) -> &Self

fn from_impl_mut(value: &mut T) -> &mut Self

impl<'a, T> FromImpl<T> for dyn Error + Send + Sync + 'a

where T: Error + Send + Sync + 'a,

fn from_impl(value: &T) -> &Self

fn from_impl_mut(value: &mut T) -> &mut Self

Implementors