diff --git a/RELEASES.md b/RELEASES.md index 39cef1e2a5770..26dd5a5c7f637 100644 --- a/RELEASES.md +++ b/RELEASES.md @@ -1,3 +1,209 @@ +Version 1.26.0 (2018-05-10) +========================== + +Language +-------- +- [Closures now implement `Copy` and/or `Clone` if all captured variables + implement either or both traits.][49299] +- [The inclusive range syntax e.g. `for x in 0..=10` is now stable.][47813] +- [Stablise `'_`. The underscore lifetime can be used anywhere where a + lifetime can be elided.][49458] +- [`impl Trait` is now stable allowing you to have abstract types in returns + or in function parameters.][49255] e.g. `fn foo() -> impl Iterator` or + `fn open(path: impl AsRef)`. +- [Pattern matching will now automatically apply dereferences.][49394] +- [128-bit integers in the form of `u128` and `i128` are now stable.][49101] +- [`main` can now return `Result<(), E: Debug>`][49162] in addition to `()`. +- [A lot of operations are now available in a const context.][46882] E.g. You + can now index into constant arrays, reference and dereference into constants, + and use Tuple struct constructors. +- [Fixed entry slice patterns are now stable.][48516] e.g. + ```rust + let points = [1, 2, 3, 4]; + match points { + [1, 2, 3, 4] => println!("All points were sequential."), + _ => println!("Not all points were sequential."), + } + ``` + + +Compiler +-------- +- [LLD is now used as the default linker for `wasm32-unknown-unknown`.][48125] +- [Fixed exponential projection complexity on nested types.][48296] + This can provide up to a ~12% reduction in compile times for certain crates. +- [Added the `--remap-path-prefix` option to rustc.][48359] Allowing you + to remap path prefixes outputted by the compiler. +- [Added `powerpc-unknown-netbsd` target.][48281] + +Libraries +--------- +- [Implemented `From for usize` & `From<{u8, i16}> for isize`.][49305] +- [Added hexadecimal formatting for integers with fmt::Debug][48978] + e.g. `assert!(format!("{:02x?}", b"Foo\0") == "[46, 6f, 6f, 00]")` +- [Implemented `Default, Hash` for `cmp::Reverse`.][48628] +- [Optimized `str::repeat` being 8x faster in large cases.][48657] +- [`ascii::escape_default` is now available in libcore.][48735] +- [Trailing commas are now supported in std and core macros.][48056] +- [Implemented `Copy, Clone` for `cmp::Reverse`][47379] +- [Implemented `Clone` for `char::{ToLowercase, ToUppercase}`.][48629] + +Stabilized APIs +--------------- +- [`*const T::add`] +- [`*const T::copy_to_nonoverlapping`] +- [`*const T::copy_to`] +- [`*const T::read_unaligned`] +- [`*const T::read_volatile`] +- [`*const T::read`] +- [`*const T::sub`] +- [`*const T::wrapping_add`] +- [`*const T::wrapping_sub`] +- [`*mut T::add`] +- [`*mut T::copy_to_nonoverlapping`] +- [`*mut T::copy_to`] +- [`*mut T::read_unaligned`] +- [`*mut T::read_volatile`] +- [`*mut T::read`] +- [`*mut T::replace`] +- [`*mut T::sub`] +- [`*mut T::swap`] +- [`*mut T::wrapping_add`] +- [`*mut T::wrapping_sub`] +- [`*mut T::write_bytes`] +- [`*mut T::write_unaligned`] +- [`*mut T::write_volatile`] +- [`*mut T::write`] +- [`Box::leak`] +- [`FromUtf8Error::as_bytes`] +- [`LocalKey::try_with`] +- [`Option::cloned`] +- [`btree_map::Entry::and_modify`] +- [`fs::read_to_string`] +- [`fs::read`] +- [`fs::write`] +- [`hash_map::Entry::and_modify`] +- [`iter::FusedIterator`] +- [`ops::RangeInclusive`] +- [`ops::RangeToInclusive`] +- [`process::id`] +- [`slice::rotate_left`] +- [`slice::rotate_right`] +- [`String::retain`] + + +Cargo +----- +- [Cargo will now output path to custom commands when `-v` is + passed with `--list`][cargo/5041] +- [The Cargo binary version is now the same as the Rust version][cargo/5083] +- [`Cargo.lock` files are now included in published crates.][cargo/5093] + +Misc +---- +- [The second edition of "The Rust Programming Language" book is now recommended + over the first.][48404] + +Compatibility Notes +------------------- + +- [aliasing a `Fn` trait as `dyn` no longer works.][48481] E.g. the following + syntax is now invalid. + ``` + use std::ops::Fn as dyn; + fn g(_: Box) {} + ``` +- [The result of dereferences are no longer promoted to `'static`.][47408] + e.g. + ```rust + fn main() { + const PAIR: &(i32, i32) = &(0, 1); + let _reversed_pair: &'static _ = &(PAIR.1, PAIR.0); // Doesn't work + } + ``` +- [Deprecate `AsciiExt` trait in favor of inherent methods.][49109] +- [`".e0"` will now no longer parse as `0.0` and will instead cause + an error.][48235] +- [Removed hoedown from rustdoc.][48274] +- [Bounds on higher-kinded lifetimes a hard error.][48326] + +[46882]: https://github.com/rust-lang/rust/pull/46882 +[47379]: https://github.com/rust-lang/rust/pull/47379 +[47408]: https://github.com/rust-lang/rust/pull/47408 +[47813]: https://github.com/rust-lang/rust/pull/47813 +[48056]: https://github.com/rust-lang/rust/pull/48056 +[48125]: https://github.com/rust-lang/rust/pull/48125 +[48166]: https://github.com/rust-lang/rust/pull/48166 +[48235]: https://github.com/rust-lang/rust/pull/48235 +[48274]: https://github.com/rust-lang/rust/pull/48274 +[48281]: https://github.com/rust-lang/rust/pull/48281 +[48296]: https://github.com/rust-lang/rust/pull/48296 +[48326]: https://github.com/rust-lang/rust/pull/48326 +[48359]: https://github.com/rust-lang/rust/pull/48359 +[48404]: https://github.com/rust-lang/rust/pull/48404 +[48481]: https://github.com/rust-lang/rust/pull/48481 +[48516]: https://github.com/rust-lang/rust/pull/48516 +[48628]: https://github.com/rust-lang/rust/pull/48628 +[48629]: https://github.com/rust-lang/rust/pull/48629 +[48657]: https://github.com/rust-lang/rust/pull/48657 +[48735]: https://github.com/rust-lang/rust/pull/48735 +[48978]: https://github.com/rust-lang/rust/pull/48978 +[49101]: https://github.com/rust-lang/rust/pull/49101 +[49109]: https://github.com/rust-lang/rust/pull/49109 +[49121]: https://github.com/rust-lang/rust/pull/49121 +[49162]: https://github.com/rust-lang/rust/pull/49162 +[49184]: https://github.com/rust-lang/rust/pull/49184 +[49234]: https://github.com/rust-lang/rust/pull/49234 +[49255]: https://github.com/rust-lang/rust/pull/49255 +[49299]: https://github.com/rust-lang/rust/pull/49299 +[49305]: https://github.com/rust-lang/rust/pull/49305 +[49394]: https://github.com/rust-lang/rust/pull/49394 +[49458]: https://github.com/rust-lang/rust/pull/49458 +[`*const T::add`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.add +[`*const T::copy_to_nonoverlapping`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.copy_to_nonoverlapping +[`*const T::copy_to`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.copy_to +[`*const T::read_unaligned`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read_unaligned +[`*const T::read_volatile`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read_volatile +[`*const T::read`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read +[`*const T::sub`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.sub +[`*const T::wrapping_add`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_add +[`*const T::wrapping_sub`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_sub +[`*mut T::add`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.add-1 +[`*mut T::copy_to_nonoverlapping`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.copy_to_nonoverlapping-1 +[`*mut T::copy_to`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.copy_to-1 +[`*mut T::read_unaligned`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read_unaligned-1 +[`*mut T::read_volatile`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read_volatile-1 +[`*mut T::read`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.read-1 +[`*mut T::replace`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.replace +[`*mut T::sub`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.sub-1 +[`*mut T::swap`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.swap +[`*mut T::wrapping_add`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_add-1 +[`*mut T::wrapping_sub`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.wrapping_sub-1 +[`*mut T::write_bytes`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.write_bytes +[`*mut T::write_unaligned`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.write_unaligned +[`*mut T::write_volatile`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.write_volatile +[`*mut T::write`]: https://doc.rust-lang.org/std/primitive.pointer.html#method.write +[`Box::leak`]: https://doc.rust-lang.org/std/boxed/struct.Box.html#method.leak +[`FromUtf8Error::as_bytes`]: https://doc.rust-lang.org/std/string/struct.FromUtf8Error.html#method.as_bytes +[`LocalKey::try_with`]: https://doc.rust-lang.org/std/thread/struct.LocalKey.html#method.try_with +[`Option::cloned`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.cloned +[`btree_map::Entry::and_modify`]: https://doc.rust-lang.org/std/collections/btree_map/enum.Entry.html#method.and_modify +[`fs::read_to_string`]: https://doc.rust-lang.org/std/fs/fn.read_to_string.html +[`fs::read`]: https://doc.rust-lang.org/std/fs/fn.read.html +[`fs::write`]: https://doc.rust-lang.org/std/fs/fn.write.html +[`hash_map::Entry::and_modify`]: https://doc.rust-lang.org/std/collections/hash_map/enum.Entry.html#method.and_modify +[`iter::FusedIterator`]: https://doc.rust-lang.org/std/iter/trait.FusedIterator.html +[`ops::RangeInclusive`]: https://doc.rust-lang.org/std/ops/struct.RangeInclusive.html +[`ops::RangeToInclusive`]: https://doc.rust-lang.org/std/ops/struct.RangeToInclusive.html +[`process::id`]: https://doc.rust-lang.org/std/process/fn.id.html +[`slice::rotate_left`]: https://doc.rust-lang.org/std/primitive.slice.html#method.rotate_left +[`slice::rotate_right`]: https://doc.rust-lang.org/std/primitive.slice.html#method.rotate_right +[`String::retain`]: https://doc.rust-lang.org/std/string/struct.String.html#method.retain +[cargo/5041]: https://github.com/rust-lang/cargo/pull/5041 +[cargo/5083]: https://github.com/rust-lang/cargo/pull/5083 +[cargo/5093]: https://github.com/rust-lang/cargo/pull/5093 + + Version 1.25.0 (2018-03-29) ==========================