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| -rw-r--r-- | library/core/src/cell.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/library/core/src/cell.rs b/library/core/src/cell.rs index f88a6e418c7..6fd49361585 100644 --- a/library/core/src/cell.rs +++ b/library/core/src/cell.rs @@ -488,6 +488,13 @@ impl<T: ?Sized> Cell<T> { /// This call borrows `Cell` mutably (at compile-time) which guarantees /// that we possess the only reference. /// + /// However be cautious: this method expects `self` to be mutable, which is + /// generally not the case when using a `Cell`. If you require interior + /// mutability by reference, consider using `RefCell` which provides + /// run-time checked mutable borrows through its [`borrow_mut`] method. + /// + /// [`borrow_mut`]: RefCell::borrow_mut() + /// /// # Examples /// /// ``` |