Trait UnwrappedCastFrom

pub trait UnwrappedCastFrom<Src> {
    // Required method
    fn unwrapped_cast_from(src: Src) -> Self;
}

Used to cast values, panicking if the value does not fit.

This trait enables trait constraints for casting in the opposite direction to UnwrappedCast.

Examples

use az::UnwrappedCastFrom;
trait Tr {
    type Assoc: UnwrappedCastFrom<u8>;
    fn unwrapped_assoc_from_u8(a: u8) -> Self::Assoc {
        UnwrappedCastFrom::unwrapped_cast_from(a)
    }
}
impl Tr for () {
    type Assoc = i8;
}
assert_eq!(<() as Tr>::unwrapped_assoc_from_u8(5u8), 5i8);

The following assertion would panic because of overflow.

let _overflow = <() as Tr>::unwrapped_assoc_from_u8(255u8);

Required Methods

fn unwrapped_cast_from(src: Src) -> Self

Casts the value.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<Src: UnwrappedCast<Dst>, Dst> UnwrappedCastFrom<Src> for Dst