Macro constmuck::transmutable::transmute_ref

macro_rules! transmute_ref {
    ($reference : expr, $transmutable_into : expr $(,) *) => { ... };
}

Transmutes &T into &U, given a TransmutableInto, allows transmuting between ?Sized types.

Example

use constmuck::{
    transmutable::transmute_ref,
    infer_tw,
};

#[derive(Debug, PartialEq)]
#[repr(transparent)]
pub struct Wrapper<T: ?Sized>(pub T);

unsafe impl<T: ?Sized> constmuck::TransparentWrapper<T> for Wrapper<T> {}

// Transmuting from `&[u8]` to `&Wrapper<[u8]>`
const BYTES: &Wrapper<[u8]> = transmute_ref!(
    b"hello" as &[u8],
    infer_tw!().from_inner,
);

assert_eq!(&BYTES.0, b"hello");