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Explain that RefCell is single-threaded.

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Fixes #21469.
This commit is contained in:
Steve Klabnik 2015-01-21 12:43:34 -05:00
parent 6869645e86
commit 973c2f65ae
1 changed files with 4 additions and 0 deletions
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4
src/libcore/cell.rs
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@ -74,6 +74,10 @@
//! } //! }
//! ``` //! ```
//! //!
//! Note that this example uses `Rc<T>` and not `Arc<T>`. `RefCell<T>`s are for single-threaded
//! scenarios. Consider using `Mutex<T>` if you need shared mutability in a multi-threaded
//! situation.
//!
//! ## Implementation details of logically-immutable methods //! ## Implementation details of logically-immutable methods
//! //!
//! Occasionally it may be desirable not to expose in an API that //! Occasionally it may be desirable not to expose in an API that