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Showing content from https://github.com/rust-lang/rust/issues/88955 below:

Tracking Issue for const Derefs · Issue #88955 · rust-lang/rust · GitHub

Feature gate: #![feature(const_deref)]

This is a tracking issue for implementing const Deref{,Mut} in the standard library.

// alloc::borrow

impl<B: ?Sized + ToOwned> const Deref for Cow<'_, B>
where
    B::Owned: ~const Borrow<B> {
    type Target = B;
}

// core::mem::manually_drop
impl<T: ?Sized> const Deref for ManuallyDrop<T> {
    type Target = T;
}
impl<T: ?Sized> const DerefMut for ManuallyDrop<T> {
    type Target = T;
}

// core::ops::deref
impl<T: ?Sized> const Deref for &mut T {
    type Target = T;
}
impl<T: ?Sized> const Deref for &T {
    type Target = T;
}

• Implementation: Const Deref #88887
• Final comment period (FCP)
• Stabilization PR

• None yet.

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