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Explain that RefCell is single-threaded. #21472

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Jan 23, 2015
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Explain that RefCell is single-threaded. #21472

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4 changes: 4 additions & 0 deletions src/libcore/cell.rs
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Expand Up @@ -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
//!
//! Occasionally it may be desirable not to expose in an API that
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