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Std traits exercise: Add link to playground #2765

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3 changes: 2 additions & 1 deletion src/std-traits/exercise.md
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Expand Up @@ -6,7 +6,8 @@ minutes: 30

In this example, you will implement the classic
["ROT13" cipher](https://en.wikipedia.org/wiki/ROT13). Copy this code to the
playground, and implement the missing bits. Only rotate ASCII alphabetic
[playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=d3ad23a195b8c8f56a007cc6b1ab8eb8)
, and implement the missing bits. Only rotate ASCII alphabetic
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This encodes the current content of this exercise in the link, but that would not be automatically updated if/when the exercise changes. If there's a way to address that and ensure that the link always includes precisely the text below it on the slide, that would be great. Otherwise, I think either a link to the playground homepage or no link at all would be best.

A quick search shows that we have linked to specific playground gists in a few other places -- we should probably remove those as well!

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Found this crate. Maybe we can build something that automatically gets a playground link to the current code example. Possibly as a separate ci job?

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Oo, that's a good idea! Do you want to make an issue to track it?

characters, to ensure the result is still valid UTF-8.

```rust,editable
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