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Update copy-clone.md (#221)

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Igor Petruk
2023-01-23 20:26:21 +00:00
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@ -45,4 +45,7 @@ In the above example, try the following:
* Remove `Copy` from the `derive` attribute. The compiler error is now in the `println!` for `p1`.
* Show that it works if you clone `p1` instead.
If students ask about `derive`, it is sufficient to say that this is a way to generate code in Rust
at compile time. In this case the default implementations of `Copy` and `Clone` traits are generated.
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