Respect duplicates when rewriting type aliases#9905
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charliermarsh merged 1 commit intomainfrom Feb 9, 2024
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AlexWaygood
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| x: TypeAlias | ||
| x: int = 1 | ||
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| # UP040 won't raise if a generic is repeated. |
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It looks like we are actually emitting a violation here, right? (And I think that's correct!)
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| # UP040 won't raise if a generic is repeated. | |
| # Make sure "T" appears only once | |
| # in the type parameters for the modernized type alias |
| let vars = vars | ||
| .into_iter() | ||
| .unique_by(|TypeVar { name, .. }| name.id.as_str()) | ||
| .collect::<Vec<_>>(); |
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Since Itertools is already in scope, you could avoid the turbofish here:
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| .collect::<Vec<_>>(); | |
| .collect_vec(); |
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As a habit, I try to avoid using Itertools where it's not providing much value since it (1) makes it a little easier if we remove the dep in the future and (2) in my opinion at least it's actually easier to read the explicit version.
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## Summary If a generic appears multiple times on the right-hand side, we should only include it once on the left-hand side when rewriting. Closes astral-sh#9904.
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Summary
If a generic appears multiple times on the right-hand side, we should only include it once on the left-hand side when rewriting.
Closes #9904.