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Version 0.7 (July 2013)
* ??? changes, numerous bugfixes
* Semantic changes
* The `self` parameter no longer implicitly means `&'self self`, and can be explicitly marked
with a lifetime.
* Libraries
* New `core::iterator` module for external iterator objects
Version 0.6 (April 2013)
* ~2100 changes, numerous bugfixes
* Syntax changes
* The self type parameter in traits is now spelled `Self`
* The `self` parameter in trait and impl methods must now be explicitly
named (for example: `fn f(&self) { }`). Implicit self is deprecated.
* Static methods no longer require the `static` keyword and instead
are distinguished by the lack of a `self` parameter
* Replaced the `Durable` trait with the `'static` lifetime
* The old closure type syntax with the trailing sigil has been
removed in favor of the more consistent leading sigil
* `super` is a keyword, and may be prefixed to paths
* Trait bounds are separated with `+` instead of whitespace
* Traits are implemented with `impl Trait for Type`
instead of `impl Type: Trait`
* Lifetime syntax is now `&'l foo` instead of `&l/foo`
* The `export` keyword has finally been removed
* The `move` keyword has been removed (see "Semantic changes")
* The interior mutability qualifier on vectors, `[mut T]`, has been
removed. Use `&mut [T]`, etc.
* `mut` is no longer valid in `~mut T`. Use inherited mutability
* `fail` is no longer a keyword. Use `fail!()`
* `assert` is no longer a keyword. Use `assert!()`
* `log` is no longer a keyword. use `debug!`, etc.
* 1-tuples may be represented as `(T,)`
* Struct fields may no longer be `mut`. Use inherited mutability,
`@mut T`, `core::mut` or `core::cell`
* `extern mod { ... }` is no longer valid syntax for foreign
function modules. Use extern blocks: `extern { ... }`
* Newtype enums removed. Use tuple-structs.
* Trait implementations no longer support visibility modifiers
* Pattern matching over vectors improved and expanded
* `const` renamed to `static` to correspond to lifetime name,
and make room for future `static mut` unsafe mutable globals.
* Replaced `#[deriving_eq]` with `#[deriving(Eq)]`, etc.
* `Clone` implementations can be automatically generated with
* Casts to traits must use a pointer sigil, e.g. `@foo as @Bar`
instead of `foo as Bar`.
* Fixed length vector types are now written as `[int, .. 3]`
instead of `[int * 3]`.
* Fixed length vector types can express the length as a constant
expression. (ex: `[int, .. GL_BUFFER_SIZE - 2]`)
* Semantic changes
* Types with owned pointers or custom destructors move by default,
eliminating the `move` keyword
* All foreign functions are considered unsafe
* &mut is now unaliasable
* Writes to borrowed @mut pointers are prevented dynamically
* () has size 0
* The name of the main function can be customized using #[main]
* The default type of an inferred closure is &fn instead of @fn
* `use` statements may no longer be "chained" - they cannot import
identifiers imported by previous `use` statements
* `use` statements are crate relative, importing from the "top"
of the crate by default. Paths may be prefixed with `super::`
or `self::` to change the search behavior.
* Method visibility is inherited from the implementation declaration
* Structural records have been removed
* Many more types can be used in static items, including enums
'static-lifetime pointers and vectors
* Pattern matching over vectors improved and expanded
* Typechecking of closure types has been overhauled to
improve inference and eliminate unsoundness
* Macros leave scope at the end of modules, unless that module is
tagged with #[macro_escape]
* Libraries
* Added big integers to `std::bigint`
* Removed `core::oldcomm` module
* Added pipe-based `core::comm` module
* Numeric traits have been reorganized under `core::num`
* `vec::slice` finally returns a slice
* `debug!` and friends don't require a format string, e.g. `debug!(Foo)`
* Containers reorganized around traits in `core::container`
* `core::dvec` removed, `~[T]` is a drop-in replacement
* `core::send_map` renamed to `core::hashmap`
* `std::map` removed; replaced with `core::hashmap`
* `std::treemap` reimplemented as an owned balanced tree
* `std::deque` and `std::smallintmap` reimplemented as owned containers
* `core::trie` added as a fast ordered map for integer keys
* Set types added to `core::hashmap`, `core::trie` and `std::treemap`
* `Ord` split into `Ord` and `TotalOrd`. `Ord` is still used to
overload the comparison operators, whereas `TotalOrd` is used
by certain container types
* Other
* Replaced the 'cargo' package manager with 'rustpkg'
* Added all-purpose 'rust' tool
* `rustc --test` now supports benchmarks with the `#[bench]` attribute
* rustc now *attempts* to offer spelling suggestions
* Improved support for ARM and Android
* Preliminary MIPS backend
* Improved foreign function ABI implementation for x86, x86_64
* Various memory usage improvements
* Rust code may be embedded in foreign code under limited circumstances
* Inline assembler supported by new asm!() syntax extension.
Version 0.5 (December 2012)
* ~900 changes, numerous bugfixes
* Syntax changes
* Removed `<-` move operator
* Completed the transition from the `#fmt` extension syntax to `fmt!`
* Removed old fixed length vector syntax - `[T]/N`
* New token-based quasi-quoters, `quote_tokens!`, `quote_expr!`, etc.
* Macros may now expand to items and statements
* `a.b()` is always parsed as a method call, never as a field projection
* `Eq` and `IterBytes` implementations can be automatically generated
with `#[deriving_eq]` and `#[deriving_iter_bytes]` respectively
* Removed the special crate language for `.rc` files
* Function arguments may consist of any irrefutable pattern
* Semantic changes
* `&` and `~` pointers may point to objects
* Tuple structs - `struct Foo(Bar, Baz)`. Will replace newtype enums.
* Enum variants may be structs
* Destructors can be added to all nominal types with the Drop trait
* Structs and nullary enum variants may be constants
* Values that cannot be implicitly copied are now automatically moved
without writing `move` explicitly
* `&T` may now be coerced to `*T`
* Coercions happen in `let` statements as well as function calls
* `use` statements now take crate-relative paths
* The module and type namespaces have been merged so that static
method names can be resolved under the trait in which they are
* Improved support for language features
* Trait inheritance works in many scenarios
* More support for explicit self arguments in methods - `self`, `&self`
`@self`, and `~self` all generally work as expected
* Static methods work in more situations
* Experimental: Traits may declare default methods for the implementations
to use
* Libraries
* New condition handling system in `core::condition`
* Timsort added to `std::sort`
* New priority queue, `std::priority_queue`
* Pipes for serializable types, `std::flatpipes'
* Serialization overhauled to be trait-based
* Expanded `getopts` definitions
* Moved futures to `std`
* More functions are pure now
* `core::comm` renamed to `oldcomm`. Still deprecated
* `rustdoc` and `cargo` are libraries now
* Misc
* Added a preliminary REPL, `rusti`
* License changed from MIT to dual MIT/APL2
Version 0.4 (October 2012)
* ~2000 changes, numerous bugfixes
* Syntax
* All keywords are now strict and may not be used as identifiers anywhere
* Keyword removal: 'again', 'import', 'check', 'new', 'owned', 'send',
'of', 'with', 'to', 'class'.
* Classes are replaced with simpler structs
* Explicit method self types
* `ret` became `return` and `alt` became `match`
* `import` is now `use`; `use is now `extern mod`
* `extern mod { ... }` is now `extern { ... }`
* `use mod` is the recommended way to import modules
* `pub` and `priv` replace deprecated export lists
* The syntax of `match` pattern arms now uses fat arrow (=>)
* `main` no longer accepts an args vector; use `os::args` instead
* Semantics
* Trait implementations are now coherent, ala Haskell typeclasses
* Trait methods may be static
* Argument modes are deprecated
* Borrowed pointers are much more mature and recommended for use
* Strings and vectors in the static region are stored in constant memory
* Typestate was removed
* Resolution rewritten to be more reliable
* Support for 'dual-mode' data structures (freezing and thawing)
* Libraries
* Most binary operators can now be overloaded via the traits in
* `std::net::url` for representing URLs
* Sendable hash maps in `core::send_map`
* `core::task' gained a (currently unsafe) task-local storage API
* Concurrency
* An efficient new intertask communication primitive called the pipe,
along with a number of higher-level channel types, in `core::pipes`
* `std::arc`, an atomically reference counted, immutable, shared memory
* `std::sync`, various exotic synchronization tools based on arcs and pipes
* Futures are now based on pipes and sendable
* More robust linked task failure
* Improved task builder API
* Other
* Improved error reporting
* Preliminary JIT support
* Preliminary work on precise GC
* Extensive architectural improvements to rustc
* Begun a transition away from buggy C++-based reflection (shape) code to
Rust-based (visitor) code
* All hash functions and tables converted to secure, randomized SipHash
Version 0.3 (July 2012)
* ~1900 changes, numerous bugfixes
* New coding conveniences
* Integer-literal suffix inference
* Per-item control over warnings, errors
* #[cfg(windows)] and #[cfg(unix)] attributes
* Documentation comments
* More compact closure syntax
* 'do' expressions for treating higher-order functions as
control structures
* *-patterns (wildcard extended to all constructor fields)
* Semantic cleanup
* Name resolution pass and exhaustiveness checker rewritten
* Region pointers and borrow checking supersede alias
* Init-ness checking is now provided by a region-based liveness
pass instead of the typestate pass; same for last-use analysis
* Extensive work on region pointers
* Experimental new language features
* Slices and fixed-size, interior-allocated vectors
* #!-comments for lang versioning, shell execution
* Destructors and iface implementation for classes;
type-parameterized classes and class methods
* 'const' type kind for types that can be used to implement
shared-memory concurrency patterns
* Type reflection
* Removal of various obsolete features
* Keywords: 'be', 'prove', 'syntax', 'note', 'mutable', 'bind',
'crust', 'native' (now 'extern'), 'cont' (now 'again')
* Constructs: do-while loops ('do' repurposed), fn binding,
resources (replaced by destructors)
* Compiler reorganization
* Syntax-layer of compiler split into separate crate
* Clang (from LLVM project) integrated into build
* Typechecker split into sub-modules
* New library code
* New time functions
* Extension methods for many built-in types
* Arc: atomic-refcount read-only / exclusive-use shared cells
* Par: parallel map and search routines
* Extensive work on libuv interface
* Much vector code moved to libraries
* Syntax extensions: #line, #col, #file, #mod, #stringify,
#include, #include_str, #include_bin
* Tool improvements
* Cargo automatically resolves dependencies
Version 0.2 (March 2012)
* >1500 changes, numerous bugfixes
* New docs and doc tooling
* New port: FreeBSD x86_64
* Compilation model enhancements
* Generics now specialized, multiply instantiated
* Functions now inlined across separate crates
* Scheduling, stack and threading fixes
* Noticeably improved message-passing performance
* Explicit schedulers
* Callbacks from C
* Helgrind clean
* Experimental new language features
* Operator overloading
* Region pointers
* Classes
* Various language extensions
* C-callback function types: 'crust fn ...'
* Infinite-loop construct: 'loop { ... }'
* Shorten 'mutable' to 'mut'
* Required mutable-local qualifier: 'let mut ...'
* Basic glob-exporting: 'export foo::*;'
* Alt now exhaustive, 'alt check' for runtime-checked
* Block-function form of 'for' loop, with 'break' and 'ret'.
* New library code
* AST quasi-quote syntax extension
* Revived libuv interface
* New modules: core::{future, iter}, std::arena
* Merged per-platform std::{os*, fs*} to core::{libc, os}
* Extensive cleanup, regularization in libstd, libcore
Version 0.1 (January 2012)
* Most language features work, including:
* Unique pointers, unique closures, move semantics
* Interface-constrained generics
* Static interface dispatch
* Stack growth
* Multithread task scheduling
* Typestate predicates
* Failure unwinding, destructors
* Pattern matching and destructuring assignment
* Lightweight block-lambda syntax
* Preliminary macro-by-example
* Compiler works with the following configurations:
* Linux: x86 and x86_64 hosts and targets
* MacOS: x86 and x86_64 hosts and targets
* Windows: x86 hosts and targets
* Cross compilation / multi-target configuration supported.
* Preliminary API-documentation and package-management tools included.
Known issues:
* Documentation is incomplete.
* Performance is below intended target.
* Standard library APIs are subject to extensive change, reorganization.
* Language-level versioning is not yet operational - future code will
break unexpectedly.
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