Trait OverflowingCastFrom

source

pub trait OverflowingCastFrom<Src>: Sized {
    // Required method
    fn overflowing_cast_from(src: Src) -> (Self, bool);
}

Expand description

Used for overflowing casts.

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

§Examples

use az::OverflowingCastFrom;
trait Tr {
    type Assoc: OverflowingCastFrom<u8>;
    fn overflowing_assoc_from_u8(a: u8) -> (Self::Assoc, bool) {
        OverflowingCastFrom::overflowing_cast_from(a)
    }
}
impl Tr for () {
    type Assoc = i8;
}
assert_eq!(<() as Tr>::overflowing_assoc_from_u8(5u8), (5i8, false));
assert_eq!(<() as Tr>::overflowing_assoc_from_u8(255u8), (-1i8, true));

Required Methods§

source

fn overflowing_cast_from(src: Src) -> (Self, bool)

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§

source §