Add borrowck 6 #30
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Add borrowck 6 #30
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It's a fairly easy one, but interesting nevertheless.
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If and when we do difficultys, we should move this to be earlier, so we can do reborrows 2 (not yet written), so it's not on their minds when they take it |
aDotInTheVoid
approved these changes
May 14, 2024
| This is basic Rust, but `r1_twice` *does* compile even though `&mut i32` does *not* implement `Copy`! | ||
| That's because for `R1`, the reference is not moved into `r1_once`, it is instead *reborrowed*. | ||
| Reborrows are a special operation on references that the borrow checker understands and behave like `&mut *x`. | ||
| So there is just a new reference passed to `r1_once`, with the original one preserved. |
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Good explaination, thanks for writing it.
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:3 thansk
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It's a fairly easy one, but interesting nevertheless.
@aDotInTheVoid