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Updated RELEASES.md for 1.31.0
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RELEASES.md
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RELEASES.md
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Version 1.31.0 (2018-12-06)
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==========================
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Language
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--------
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- 🎉 [This version marks the release of the 2018 edition of Rust.][54057] 🎉
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- [New lifetime elision rules now allow for eliding lifetimes in functions and
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impl headers.][54778] E.g. `impl<'a> Reader for BufReader<'a> {}` can now be
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`impl Reader for BufReader<'_> {}`. Lifetimes are still required to be defined
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in structs.
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- [You can now define and use `const` functions.][54835] These are currently
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a strict minimal subset of the [const fn RFC][RFC-911]. Refer to the
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[language reference][const-reference] for what exactly is available.
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- [You can now use tool lints, which allow you to scope lints from external
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tools using attributes.][54870] E.g. `#[allow(clippy::filter_map)]`.
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- [`#[no_mangle]` and `#[export_name]` attributes can now be located anywhere in
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a crate, not just in exported functions.][54451]
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- [You can now use parentheses in pattern matches.][54497]
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Compiler
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--------
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- [Updated musl to 1.1.20][54430]
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Libraries
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---------
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- [You can now convert `num::NonZero*` types to their raw equivalvents using the
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`From` trait.][54240] E.g. `u8` now implements `From<NonZeroU8>`.
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- [You can now convert a `&Option<T>` into `Option<&T>` and `&mut Option<T>`
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into `Option<&mut T>` using the `From` trait.][53218]
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- [You can now multiply (`*`) a `time::Duration` by a `u32`.][52813]
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Stabilized APIs
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---------------
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- [`slice::align_to`]
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- [`slice::align_to_mut`]
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- [`slice::chunks_exact`]
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- [`slice::chunks_exact_mut`]
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- [`slice::rchunks`]
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- [`slice::rchunks_mut`]
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- [`slice::rchunks_exact`]
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- [`slice::rchunks_exact_mut`]
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- [`Option::replace`]
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Cargo
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-----
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- [Cargo will now download crates in parallel using HTTP/2.][cargo/6005]
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[52813]: https://github.com/rust-lang/rust/pull/52813/
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[53218]: https://github.com/rust-lang/rust/pull/53218/
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[53555]: https://github.com/rust-lang/rust/issues/53555/
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[54057]: https://github.com/rust-lang/rust/pull/54057/
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[54240]: https://github.com/rust-lang/rust/pull/54240/
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[54430]: https://github.com/rust-lang/rust/pull/54430/
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[54451]: https://github.com/rust-lang/rust/pull/54451/
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[54497]: https://github.com/rust-lang/rust/pull/54497/
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[54778]: https://github.com/rust-lang/rust/pull/54778/
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[54835]: https://github.com/rust-lang/rust/pull/54835/
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[54870]: https://github.com/rust-lang/rust/pull/54870/
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[RFC-911]: https://github.com/rust-lang/rfcs/pull/911
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[`Option::replace`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.replace
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[`slice::align_to_mut`]: https://doc.rust-lang.org/std/primitive.slice.html#method.align_to_mut
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[`slice::align_to`]: https://doc.rust-lang.org/std/primitive.slice.html#method.align_to
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[`slice::chunks_exact_mut`]: https://doc.rust-lang.org/std/primitive.slice.html#method.chunks_exact_mut
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[`slice::chunks_exact`]: https://doc.rust-lang.org/std/primitive.slice.html#method.chunks_exact
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[`slice::rchunks_exact_mut`]: https://doc.rust-lang.org/std/primitive.slice.html#method.rchunks_mut
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[`slice::rchunks_exact`]: https://doc.rust-lang.org/std/primitive.slice.html#method.rchunks_exact
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[`slice::rchunks_mut`]: https://doc.rust-lang.org/std/primitive.slice.html#method.rchunks_mut
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[`slice::rchunks`]: https://doc.rust-lang.org/std/primitive.slice.html#method.rchunks
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[cargo/6005]: https://github.com/rust-lang/cargo/pull/6005/
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[const-reference]: https://doc.rust-lang.org/reference/items/functions.html#const-functions
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Version 1.30.0 (2018-10-25)
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Version 1.30.0 (2018-10-25)
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==========================
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==========================
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