Rollup of 6 pull requests #51319
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Rollup of 6 pull requests #51319
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The examples for both hash_map::OccupiedEntry::get_mut and hash_map::OccupiedEntry::into_mut were almost identical. This led to some confusion over the difference, namely why you would ever use get_mut when into_mut gives alonger lifetime. Reddit thread: https://www.reddit.com/r/rust/comments/8a5swr/why_does_hashmaps This commit adds two lines and a comment to the example, to show that the entry object can be re-used after calling get_mut.
Also, rename the variable from "type_str" to "item_kind" to avoid the ambiguity that caused this bug.
…ertj Specify that packed types must derive, not implement, Copy
Make Layout's align a NonZeroUsize This PR makes the `Layout`'s align field a `NonZeroUsize` since it cannot ever be zero, not even while building a `Layout`. It also contains some drive-by minor cleanups over the docs and the code, like updating the documented error types, or using the `size()` and `align()` methods instead of accessing the fields directly (the latter was required for the `NonZeroUsize` change anyways). r? @SimonSapin cc @Amanieu
…=QuietMisdreavus Fix run button style r? @QuietMisdreavus
…=SimonSapin impl Default for &mut str Rationale: There is already `impl Default for &mut [T]`. Note: This impl is insta-stable.
…-mut, r=dtolnay Clarify the difference between get_mut and into_mut for OccupiedEntry The examples for both hash_map::OccupiedEntry::get_mut and hash_map::OccupiedEntry::into_mut were almost identical. This led to some confusion over the difference, namely why you would ever use get_mut when into_mut gives alonger lifetime. Reddit thread: https://www.reddit.com/r/rust/comments/8a5swr/why_does_hashmaps This commit adds two lines and a comment to the example, to show that the entry object can be re-used after calling get_mut. Closes rust-lang#49745
… r=oli-obk use type name in E0599 enum variant suggestion Also, rename the variable from "type_str" to "item_kind" to avoid the ambiguity that caused this bug.
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Rollup of 6 pull requests Successful merges: - #51143 (Specify that packed types must derive, not implement, Copy) - #51226 (Make Layout's align a NonZeroUsize) - #51297 (Fix run button style) - #51306 (impl Default for &mut str) - #51312 (Clarify the difference between get_mut and into_mut for OccupiedEntry) - #51313 (use type name in E0599 enum variant suggestion) Failed merges:
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☀️ Test successful - status-appveyor, status-travis |
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