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Mention Arc on Rc slide

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Fixes #67.
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Martin Geisler 2022-12-28 10:15:17 +01:00 committed by GitHub
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src/std/rc.md
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@ -16,7 +16,9 @@ fn main() {
```
If you need to mutate the data inside an `Rc`, you will need to wrap the data in
a type such as [`Cell` or `RefCell`][2].
a type such as [`Cell` or `RefCell`][2]. See [`Arc`][3] if you are in a multi-threaded
context.
[1]: https://doc.rust-lang.org/std/rc/struct.Rc.html
[2]: https://doc.rust-lang.org/std/cell/index.html
[3]: ../concurrency/shared_state/arc.md