Function konst::ptr::nonnull::as_mut

source · 
pub const unsafe fn as_mut<'a, T: ?Sized>(ptr: NonNull<T>) -> &'a mut T
Available on crate feature mut_refs only.
Expand description

Const equivalent of NonNull::as_mut.

§Safety

This has the same safety requirements as NonNull::as_mut

§Example

use konst::ptr::nonnull;

use core::ptr::NonNull;

assert_eq!(TUP, (13, 15, 18));

const TUP: (u8, u8, u8) = unsafe {
    let mut tuple = (3, 5, 8);
    mutate(nonnull::from_mut(&mut tuple.0));
    mutate(nonnull::from_mut(&mut tuple.1));
    mutate(nonnull::from_mut(&mut tuple.2));
    tuple
};

const unsafe fn mutate(x: NonNull<u8>) {
    *nonnull::as_mut(x) += 10;
}