Updated RELEASES for 1.28.0 #51722
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| Version 1.28.0 (2018-08-02) | ||
| =========================== | ||
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| Language | ||
| -------- | ||
| - [Stabilised the `#[repr(transparent)]` attribute.][51562] This attribute | ||
| allows a Rust newtype wrapper (`struct NewType<T>(T);`) to be represented as | ||
| the inner type across Foreign Function Interface (FFI) boundaries. | ||
| - [The keywords `pure`, `sizeof`, `alignof`, and `offsetof` have been unreserved | ||
| and can now be used as identifiers.][51196] | ||
| - [Stabilised the `GlobalAlloc` trait and `#[global_allocator]` | ||
| attribute.][51241] This will allow users to specify a global allocator for | ||
| their program. | ||
| - [Unit test functions marked with the `#[test]` attribute can now return | ||
| `Result<(), E: Debug>` in addition to `()`.][51298] | ||
| - [Stabilised a `lifetime` specifier to `macro_rules!` allowing macros to easily | ||
| target lifetimes.][50385] | ||
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| Compiler | ||
| -------- | ||
| - [Stabilised the `s` and `z` optimisation levels.][50265] These optimisations | ||
| prioritise making smaller binary sizes. `z` is the same as `s` with the | ||
| exception that it does not vectorise loops, which typically results in an even | ||
| smaller binary. | ||
| - [Stabilised the short error format.][49546] Specified with | ||
| `--error-format=short` this option will provide a more compressed output of | ||
| rust error messages. | ||
| - [Added a lint warning when you have duplicated `macro_export`s.][50143] | ||
| - [Reduced the number of allocations in the macro parser.][50855] This can | ||
| improve compile times of macro heavy crates on average by 5%. | ||
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| Libraries | ||
| --------- | ||
| - [Implemented `Default` for `&mut str`.][51306] | ||
| - [Implemented `From<bool>` for all integer and unsigned number types.][50554] | ||
| - [Implemented `Extend` for `()`.][50234] | ||
| - [The `Debug` implementation of `time::Duration` should now be more easily | ||
| human readable.][50364] Previously a `Duration` of one second would printed as | ||
| `Duration { secs: 1, nanos: 0 }` and will now be printed as `1s`. | ||
| - [Implemented `From<&String>` for `Cow<str>`, `From<&Vec<T>>` for `Cow<[T]>`, | ||
| `From<Cow<CStr>>` for `CString`, `From<CString>, From<CStr>, From<&CString>` | ||
| for `Cow<CStr>`, `From<OsString>, From<OsStr>, From<&OsString>` for | ||
| `Cow<OsStr>`, `From<&PathBuf>` for `Cow<Path>`, and `From<Cow<Path>>` | ||
| for `PathBuf`.][50170] | ||
| - [Implemented `Shl` and `Shr` for `Wrapping<u128>` | ||
| and `Wrapping<i128>`.][50465] | ||
| - [`DirEntry::metadata` now uses `fstatat` instead of `lstat` when | ||
| possible.][51050] This can provide up to a 40% speed increase. | ||
| - [Improved error messages when using `format!`.][50610] | ||
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There was a problem hiding this comment. #50465 insta-stabilized |
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| Stabilized APIs | ||
| --------------- | ||
| - [`Iterator::step_by`] | ||
| - [`Path::ancestors`] | ||
| - [`btree_map::Entry::or_default`] | ||
| - [`fmt::Alignment`] | ||
| - [`hash_map::Entry::or_default`] | ||
| - [`iter::repeat_with`] | ||
| - [`num::NonZeroU128`] | ||
| - [`num::NonZeroU16`] | ||
| - [`num::NonZeroU32`] | ||
| - [`num::NonZeroU64`] | ||
| - [`num::NonZeroU8`] | ||
|
There was a problem hiding this comment. I think |
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| - [`ops::RangeBounds`] | ||
| - [`slice::SliceIndex`] | ||
| - [`slice::from_mut`] | ||
| - [`slice::from_ref`] | ||
| - [`{Any + Send + Sync}::downcast_mut`] | ||
| - [`{Any + Send + Sync}::downcast_ref`] | ||
| - [`{Any + Send + Sync}::is`] | ||
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| Cargo | ||
| ----- | ||
| - [Cargo will now no longer allow you to publish crates with build scripts that | ||
| modify the `src` directory.][cargo/5584] The `src` directory in a crate should be | ||
| considered to be immutable. | ||
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| Misc | ||
| ---- | ||
| - [Stabilised the `suggestion_applicability` field in the json output.][50486] | ||
| This will allow dev tools to check whether a code suggestion would apply | ||
| to them. | ||
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| Compatibility Notes | ||
| ------------------- | ||
| - [Rust will no longer consider trait objects with duplicated constraints to | ||
| have implementations.][51276] For example the below code will now fail | ||
| to compile. | ||
| ```rust | ||
| trait Trait {} | ||
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| impl Trait + Send { | ||
| fn test(&self) { println!("one"); } //~ ERROR duplicate definitions with name `test` | ||
| } | ||
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| impl Trait + Send + Send { | ||
| fn test(&self) { println!("two"); } | ||
| } | ||
| ``` | ||
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| [49546]: https://github.com/rust-lang/rust/pull/49546/ | ||
| [50143]: https://github.com/rust-lang/rust/pull/50143/ | ||
| [50170]: https://github.com/rust-lang/rust/pull/50170/ | ||
| [50234]: https://github.com/rust-lang/rust/pull/50234/ | ||
| [50265]: https://github.com/rust-lang/rust/pull/50265/ | ||
| [50364]: https://github.com/rust-lang/rust/pull/50364/ | ||
| [50385]: https://github.com/rust-lang/rust/pull/50385/ | ||
| [50465]: https://github.com/rust-lang/rust/pull/50465/ | ||
| [50486]: https://github.com/rust-lang/rust/pull/50486/ | ||
| [50554]: https://github.com/rust-lang/rust/pull/50554/ | ||
| [50610]: https://github.com/rust-lang/rust/pull/50610/ | ||
| [50855]: https://github.com/rust-lang/rust/pull/50855/ | ||
| [51050]: https://github.com/rust-lang/rust/pull/51050/ | ||
| [51196]: https://github.com/rust-lang/rust/pull/51196/ | ||
| [51200]: https://github.com/rust-lang/rust/pull/51200/ | ||
| [51241]: https://github.com/rust-lang/rust/pull/51241/ | ||
| [51276]: https://github.com/rust-lang/rust/pull/51276/ | ||
| [51298]: https://github.com/rust-lang/rust/pull/51298/ | ||
| [51306]: https://github.com/rust-lang/rust/pull/51306/ | ||
| [51562]: https://github.com/rust-lang/rust/pull/51562/ | ||
| [cargo/5584]: https://github.com/rust-lang/cargo/pull/5584/ | ||
| [`Iterator::step_by`]: https://doc.rust-lang.org/std/iter/trait.Iterator.html#method.step_by | ||
| [`Path::ancestors`]: https://doc.rust-lang.org/std/path/struct.Path.html#method.ancestors | ||
| [`btree_map::Entry::or_default`]: https://doc.rust-lang.org/std/collections/btree_map/enum.Entry.html#method.or_default | ||
| [`fmt::Alignment`]: https://doc.rust-lang.org/std/fmt/enum.Alignment.html | ||
| [`hash_map::Entry::or_default`]: https://doc.rust-lang.org/std/collections/btree_map/enum.Entry.html#method.or_default | ||
| [`iter::repeat_with`]: https://doc.rust-lang.org/std/iter/fn.repeat_with.html | ||
| [`num::NonZeroU128`]: https://doc.rust-lang.org/std/num/struct.NonZeroU128.html | ||
| [`num::NonZeroU16`]: https://doc.rust-lang.org/std/num/struct.NonZeroU16.html | ||
| [`num::NonZeroU32`]: https://doc.rust-lang.org/std/num/struct.NonZeroU32.html | ||
| [`num::NonZeroU64`]: https://doc.rust-lang.org/std/num/struct.NonZeroU64.html | ||
| [`num::NonZeroU8`]: https://doc.rust-lang.org/std/num/struct.NonZeroU8.html | ||
| [`ops::RangeBounds`]: https://doc.rust-lang.org/std/ops/trait.RangeBounds.html | ||
| [`slice::SliceIndex`]: https://doc.rust-lang.org/std/slice/trait.SliceIndex.html | ||
| [`slice::from_mut`]: https://doc.rust-lang.org/std/slice/fn.from_mut.html | ||
| [`slice::from_ref`]: https://doc.rust-lang.org/std/slice/fn.from_ref.html | ||
| [`{Any + Send + Sync}::downcast_mut`]: https://doc.rust-lang.org/std/any/trait.Any.html#method.downcast_mut-2 | ||
| [`{Any + Send + Sync}::downcast_ref`]: https://doc.rust-lang.org/std/any/trait.Any.html#method.downcast_ref-2 | ||
| [`{Any + Send + Sync}::is`]: https://doc.rust-lang.org/std/any/trait.Any.html#method.is-2 | ||
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| Version 1.27.0 (2018-06-21) | ||
| ========================== | ||
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This should be spelled as "Stabilized"? (also: "optimization", "prioritize", "vectorize")
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@kennytm Should it? I'm not from the US so when I'm writing it's stabilise, optimisation, prioritise, and vectorise.
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We should try to be consistent across the release notes. There is the "Stabilized APIs" section, but "Stabilised XYZ" is used everywhere else in the 1.27 notes.
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I think consistency is important, and while I hate to admit it, American spelling is the standard in tech
even though it's wrong.We should at least be using it where people might be ctrl-F-ing.
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I remember someone saying that
izeis valid BrE spelling...I think it is more important to be consistent with our past selves than tech in general...
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Well, you could try to sneak it into an internationalization RFC... British-vs-American English!
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To be frank if we want to be consistent with our past these should be written as (see 1.27.0 and 1.26.0 release notes):
Or simply don't focus on the stabilization process
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Perhaps it might actually be worth creating a proper style guide for these, as an RFC or otherwise?
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I think the release team can just create a style guide for their own purposes if need be. Don't think this rises to the level of needing an RFC.
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Yeah. Added this to the release team meeting agenda.