1.4 release notes #29416
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| Version 1.4.0 (October 2015) | ||
| ============================ | ||
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| * ~1200 changes, numerous bugfixes | ||
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| Highlights | ||
| ---------- | ||
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| * Windows builds targeting the 64-bit MSVC ABI and linker (instead of | ||
| GNU) are now supported and recommended for use. | ||
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| Breaking Changes | ||
| ---------------- | ||
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| * [Several changes have been made to fix type soundness and improve | ||
| the behavior of associated types][sound]. See [RFC 1214]. Although | ||
| we have mostly introduced these changes as warnings this release, to | ||
| become errors next release, there are still some scenarios that will | ||
| see immediate breakage. | ||
| * [The `str::lines` and `BufRead::lines` iterators treat `\r\n` as | ||
| line breaks in addition to `\n`][crlf]. | ||
| * [Loans of `'static` lifetime extend to the end of a function][stat]. | ||
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| Language | ||
| -------- | ||
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| * `use` statements that import multiple items [can now rename | ||
| them][i], as in `use foo::{bar as kitten, baz as puppy}`. | ||
| * [Binops work correctly on fat pointers][binfat]. | ||
| * `pub extern crate`, which does not behave as expected, [issues a | ||
| warning][pec] until a better solution is found. | ||
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| Libraries | ||
| --------- | ||
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| * [Many APIs were stabilized][stab]: `<Box<str>>::into_string`, | ||
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There was a problem hiding this comment. i guess this is so long, a sub-list would just make the post really long... |
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| [`Arc::downgrade`], [`Arc::get_mut`], [`Arc::make_mut`], | ||
| [`Arc::try_unwrap`], [`Box::from_raw`], [`Box::into_raw`], [`CStr::to_str`], | ||
| [`CStr::to_string_lossy`], [`CString::from_raw`], [`CString::into_raw`], | ||
| [`IntoRawFd::into_raw_fd`], [`IntoRawFd`], | ||
| `IntoRawHandle::into_raw_handle`, `IntoRawHandle`, | ||
| `IntoRawSocket::into_raw_socket`, `IntoRawSocket`, [`Rc::downgrade`], | ||
| [`Rc::get_mut`], [`Rc::make_mut`], [`Rc::try_unwrap`], [`Result::expect`], | ||
| [`String::into_boxed_str`], [`TcpStream::read_timeout`], | ||
| [`TcpStream::set_read_timeout`], [`TcpStream::set_write_timeout`], | ||
| [`TcpStream::write_timeout`], [`UdpSocket::read_timeout`], | ||
| [`UdpSocket::set_read_timeout`], [`UdpSocket::set_write_timeout`], | ||
| [`UdpSocket::write_timeout`], `Vec::append`, `Vec::split_off`, | ||
| [`VecDeque::append`], [`VecDeque::retain`], [`VecDeque::split_off`], | ||
| [`rc::Weak::upgrade`], [`rc::Weak`], [`slice::Iter::as_slice`], | ||
| [`slice::IterMut::into_slice`], [`str::CharIndices::as_str`], | ||
| [`str::Chars::as_str`], [`str::split_at_mut`], [`str::split_at`], | ||
| [`sync::Weak::upgrade`], [`sync::Weak`], [`thread::park_timeout`], | ||
| [`thread::sleep`]. | ||
| * [Some APIs were deprecated][dep]: `BTreeMap::with_b`, | ||
| `BTreeSet::with_b`, `Option::as_mut_slice`, `Option::as_slice`, | ||
| `Result::as_mut_slice`, `Result::as_slice`, `f32::from_str_radix`, | ||
| `f64::from_str_radix`. | ||
| * [Reverse-searching strings is faster with the 'two-way' | ||
| algorithm][s]. | ||
| * [`std::io::copy` allows `?Sized` arguments][cc]. | ||
| * The `Windows`, `Chunks`, and `ChunksMut` iterators over slices all | ||
| [override `count`, `nth` and `last` with an O(1) | ||
| implementation][it]. | ||
| * [`Default` is implemented for arrays up to `[T; 32]`][d]. | ||
| * [`IntoRawFd` has been added to the Unix-specific prelude, | ||
| `IntoRawSocket` and `IntoRawHandle` to the Windows-specific | ||
| prelude][pr]. | ||
| * [`Extend<String>` and `FromIterator<String` are both implemented for | ||
| `String`][es]. | ||
| * [`IntoIterator` is implemented for `Option<&T>` and | ||
|
There was a problem hiding this comment. I think the PR link should be core: Implement IntoIterator for Option and Result references #28039, and the text should say for There was a problem hiding this comment. Oh, the link is fine, but not in the rendered version. I guess it's a collision of link tags. |
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| `Result<&T>`][into]. | ||
| * [`HashMap` and `HashSet` implement `Extend<&T>` where `T: | ||
| Copy`][ext] as part of [RFC 839]. | ||
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There was a problem hiding this comment. This will break someone's type inference, just like the previous |
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| * [`BinaryHeap` implements `Debug`][bh2]. | ||
| * [`Borrow` and `BorrowMut` are implemented for fixed-size | ||
| arrays][bm]. | ||
| * [`extern fn`s of with the "Rust" and "C" ABIs implement common | ||
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There was a problem hiding this comment. "of with" doesn't make sense |
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| traits including `Eq`, `Ord`, `Debug`, `Hash`][fp]. | ||
| * [String comparison is faster][faststr]. | ||
| * `&mut T` where `T: Write` [also implements `Write`][mutw]. | ||
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There was a problem hiding this comment. Could say There was a problem hiding this comment. Ah, I didn't realize. I'll clarify. |
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| * [A stable regression in `VecDec::push_back` that caused panics for | ||
| zero-sized types was fixed][vd]. | ||
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There was a problem hiding this comment. Typo: |
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| * [Function pointers implement traits for up to 12 parameters][fp2]. | ||
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| Miscellaneous | ||
| ------------- | ||
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| * The compiler [no longer uses the 'morestack' feature to prevent | ||
| stack overflow][mm]. Instead it uses guard pages and stack | ||
| probes (though stack probes are not yet implemented on any platform | ||
| but Windows). | ||
| * [The compiler matches traits faster when projections are involved][p]. | ||
| * The 'improper_ctypes' lint [no longer warns about use of `isize` and | ||
| `usize`][ffi]. | ||
| * [Cargo now displays useful information about what its doing during | ||
| `cargo update`][cu]. | ||
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| [`Arc::downgrade`]: http://doc.rust-lang.org/nightly/alloc/arc/struct.Arc.html#method.downgrade | ||
| [`Arc::make_mut`]: http://doc.rust-lang.org/nightly/alloc/arc/struct.Arc.html#method.make_mut | ||
| [`Arc::get_mut`]: http://doc.rust-lang.org/nightly/alloc/arc/struct.Arc.html#method.get_mut | ||
| [`Arc::try_unwrap`]: http://doc.rust-lang.org/nightly/alloc/arc/struct.Arc.html#method.try_unwrap | ||
| [`Box::from_raw`]: http://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html#method.from_raw | ||
| [`Box::into_raw`]: http://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html#method.into_raw | ||
| [`CStr::to_str`]: http://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.to_str | ||
| [`CStr::to_string_lossy`]: http://doc.rust-lang.org/nightly/std/ffi/struct.CStr.html#method.to_string_lossy | ||
| [`CString::from_raw`]: http://doc.rust-lang.org/nightly/std/ffi/struct.CString.html#method.from_raw | ||
| [`CString::into_raw`]: http://doc.rust-lang.org/nightly/std/ffi/struct.CString.html#method.into_raw | ||
| [`IntoRawFd::into_raw_fd`]: http://doc.rust-lang.org/nightly/std/os/unix/io/trait.IntoRawFd.html#tymethod.into_raw_fd | ||
| [`IntoRawFd`]: http://doc.rust-lang.org/nightly/std/os/unix/io/trait.IntoRawFd.html | ||
| [`Rc::downgrade`]: http://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html#method.downgrade | ||
| [`Rc::get_mut`]: http://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html#method.get_mut | ||
| [`Rc::make_mut`]: http://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html#method.make_mut | ||
| [`Rc::try_unwrap`]: http://doc.rust-lang.org/nightly/alloc/rc/struct.Rc.html#method.try_unwrap | ||
| [`Result::expect`]: http://doc.rust-lang.org/nightly/core/result/enum.Result.html#method.expect | ||
| [`String::into_boxed_str`]: http://doc.rust-lang.org/nightly/collections/string/struct.String.html#method.into_boxed_str | ||
| [`TcpStream::read_timeout`]: http://doc.rust-lang.org/nightly/std/net/struct.TcpStream.html#method.read_timeout | ||
| [`TcpStream::set_read_timeout`]: http://doc.rust-lang.org/nightly/std/net/struct.TcpStream.html#method.set_read_timeout | ||
| [`TcpStream::write_timeout`]: http://doc.rust-lang.org/nightly/std/net/struct.TcpStream.html#method.write_timeout | ||
| [`TcpStream::set_write_timeout`]: http://doc.rust-lang.org/nightly/std/net/struct.TcpStream.html#method.set_write_timeout | ||
| [`UdpSocket::read_timeout`]: http://doc.rust-lang.org/nightly/std/net/struct.TcpStream.html#method.read_timeout | ||
| [`UdpSocket::set_read_timeout`]: http://doc.rust-lang.org/nightly/std/net/struct.TcpStream.html#method.set_read_timeout | ||
| [`UdpSocket::write_timeout`]: http://doc.rust-lang.org/nightly/std/net/struct.TcpStream.html#method.write_timeout | ||
| [`UdpSocket::set_write_timeout`]: http://doc.rust-lang.org/nightly/std/net/struct.TcpStream.html#method.set_write_timeout | ||
| [`VecDeque::append`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.append | ||
| [`VecDeque::retain`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.retain | ||
| [`VecDeque::split_off`]: http://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.split_off | ||
| [`rc::Weak::upgrade`]: http://doc.rust-lang.org/nightly/std/rc/struct.Weak.html#method.upgrade | ||
| [`rc::Weak`]: http://doc.rust-lang.org/nightly/std/rc/struct.Weak.html | ||
| [`slice::Iter::as_slice`]: http://doc.rust-lang.org/nightly/std/slice/struct.Iter.html#method.as_slice | ||
| [`slice::IterMut::into_slice`]: http://doc.rust-lang.org/nightly/std/slice/struct.IterMut.html#method.into_slice | ||
| [`str::CharIndices::as_str`]: http://doc.rust-lang.org/nightly/std/str/struct.CharIndices.html#method.as_str | ||
| [`str::Chars::as_str`]: http://doc.rust-lang.org/nightly/std/str/struct.Chars.html#method.as_str | ||
| [`str::split_at_mut`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_at_mut | ||
| [`str::split_at`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_at | ||
| [`sync::Weak::upgrade`]: http://doc.rust-lang.org/nightly/std/sync/struct.Weak.html#method.upgrade | ||
| [`sync::Weak`]: http://doc.rust-lang.org/nightly/std/sync/struct.Weak.html | ||
| [`thread::park_timeout`]: http://doc.rust-lang.org/nightly/std/thread/fn.park_timeout.html | ||
| [`thread::sleep`]: http://doc.rust-lang.org/nightly/std/thread/fn.sleep.html | ||
| [bh2]: https://github.com/rust-lang/rust/pull/28156 | ||
| [binfat]: https://github.com/rust-lang/rust/pull/28270 | ||
| [bm]: https://github.com/rust-lang/rust/pull/28197 | ||
| [cc]: https://github.com/rust-lang/rust/pull/27531 | ||
| [crlf]: https://github.com/rust-lang/rust/pull/28034 | ||
| [cu]: https://github.com/rust-lang/cargo/pull/1931 | ||
| [d]: https://github.com/rust-lang/rust/pull/27825 | ||
| [dep]: https://github.com/rust-lang/rust/pull/28339 | ||
| [es]: https://github.com/rust-lang/rust/pull/27956 | ||
| [ext]: https://github.com/rust-lang/rust/pull/28094 | ||
| [faststr]: https://github.com/rust-lang/rust/pull/28338 | ||
| [ffi]: https://github.com/rust-lang/rust/pull/28779 | ||
| [fp]: https://github.com/rust-lang/rust/pull/28268 | ||
| [fp2]: https://github.com/rust-lang/rust/pull/28560 | ||
| [i]: https://github.com/rust-lang/rust/pull/27451 | ||
| [into]: https://github.com/rust-lang/rust/pull/28039 | ||
| [it]: https://github.com/rust-lang/rust/pull/27652 | ||
| [mm]: https://github.com/rust-lang/rust/pull/27338 | ||
| [mutw]: https://github.com/rust-lang/rust/pull/28368 | ||
| [sound]: https://github.com/rust-lang/rust/pull/27641 | ||
| [p]: https://github.com/rust-lang/rust/pull/27866 | ||
| [pec]: https://github.com/rust-lang/rust/pull/28486 | ||
| [pr]: https://github.com/rust-lang/rust/pull/27896 | ||
| [RFC 839]: https://github.com/rust-lang/rfcs/blob/master/text/0839-embrace-extend-extinguish.md | ||
| [RFC 1214]: https://github.com/rust-lang/rfcs/blob/master/text/1214-projections-lifetimes-and-wf.md | ||
| [s]: https://github.com/rust-lang/rust/pull/27474 | ||
| [stab]: https://github.com/rust-lang/rust/pull/28339 | ||
| [stat]: https://github.com/rust-lang/rust/pull/28321 | ||
| [vd]: https://github.com/rust-lang/rust/pull/28494 | ||
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| Version 1.3.0 (2015-09-17) | ||
| ============================== | ||
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The format below is YYYY-MM-DD, perhaps the same format could be used?
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I don't do this for the releases in case it slips because then its confusing.
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We can put the date outside of the heading, that way changing the date doesn't break anchored links. Not a super big deal, it's just the anchor, but I guess it's used sometimes?
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I hadn't thought about the anchor. Interesting point. I'd be fine rethinking how it's presented.