Tracking Issue for const_cell

[RalfJung]

Feature gate: #![feature(const_cell)]

This is a tracking issue for using Cell in a const context.

Public API

// core::cell

impl<T> Cell<T> {
    pub const fn replace(&self, val: T) -> T;
}

impl<T: Copy> Cell<T> {
    pub const fn get(&self) -> T;
}

impl<T: ?Sized> Cell<T> {
    pub const fn get_mut(&mut self) -> &mut T;
    pub const fn from_mut(t: &mut T) -> &Cell<T>;
}

impl<T> Cell<[T]> {
    pub const fn as_slice_of_cells(&self) -> &[Cell<T>];
}

Steps / History

• Implementation: make Cell unstably const #131281
• Final comment period (FCP)¹
• Stabilization PR

Unresolved Questions

• None yet.

Footnotes

1. https://std-dev-guide.rust-lang.org/feature-lifecycle/stabilization.html ↩