編譯型編程語言Rust v1.9.0 發布

Rust是一個由Mozilla主導開發的通用、編譯型編程語言。它的設計準則為“安全，并發，實用”，支持函數式，并發式，過程式以及面向對象的編程風格。Rust 的設計目標之一，是要使設計大型的互聯網客戶端和服務器的任務變得更容易。因此更加強調安全性、內存配置、以及并發處理等方面的特性。在性能上，具有額外安全保證的代碼會比 C++ 慢一些，但是如果以 C++ 也手工提供保證的情況下，則兩者性能上是相似的。

更新日志

語言

• The #[deprecated] attribute when applied to an API will generate warnings when used. The warnings may be suppressed with #[allow(deprecated)]. RFC 1270.
• fn item types are zero sized, and each fn names a unique type. This will break code that transmutes fns, so callingtransmute on a fn type will generate a warning for a few cycles, then will be converted to an error.
• Field and method resolution understand visibility, so private fields and methods cannot prevent the proper use of public fields and methods.
• The parser considers unicode codepoints in the PATTERN_WHITE_SPACE category to be whitespace.

穩定的APIs

• std::panic
• std::panic::catch_unwind (renamed from recover)
• std::panic::resume_unwind (renamed from propagate)
• std::panic::AssertUnwindSafe (renamed from AssertRecoverSafe)
• std::panic::UnwindSafe (renamed from RecoverSafe)
• str::is_char_boundary
• <*const T>::as_ref
• <*mut T>::as_ref
• <*mut T>::as_mut
• AsciiExt::make_ascii_uppercase
• AsciiExt::make_ascii_lowercase
• char::decode_utf16
• char::DecodeUtf16
• char::DecodeUtf16Error
• char::DecodeUtf16Error::unpaired_surrogate
• BTreeSet::take
• BTreeSet::replace
• BTreeSet::get
• HashSet::take
• HashSet::replace
• HashSet::get
• OsString::with_capacity
• OsString::clear
• OsString::capacity
• OsString::reserve
• OsString::reserve_exact
• OsStr::is_empty
• OsStr::len
• std::os::unix::thread
• RawPthread
• JoinHandleExt
• JoinHandleExt::as_pthread_t
• JoinHandleExt::into_pthread_t
• HashSet::hasher
• HashMap::hasher
• CommandExt::exec
• File::try_clone
• SocketAddr::set_ip
• SocketAddr::set_port
• SocketAddrV4::set_ip
• SocketAddrV4::set_port
• SocketAddrV6::set_ip
• SocketAddrV6::set_port
• SocketAddrV6::set_flowinfo
• SocketAddrV6::set_scope_id
• slice::copy_from_slice
• ptr::read_volatile
• ptr::write_volatile
• OpenOptions::create_new
• TcpStream::set_nodelay
• TcpStream::nodelay
• TcpStream::set_ttl
• TcpStream::ttl
• TcpStream::set_only_v6
• TcpStream::only_v6
• TcpStream::take_error
• TcpStream::set_nonblocking
• TcpListener::set_ttl
• TcpListener::ttl
• TcpListener::set_only_v6
• TcpListener::only_v6
• TcpListener::take_error
• TcpListener::set_nonblocking
• UdpSocket::set_broadcast
• UdpSocket::broadcast
• UdpSocket::set_multicast_loop_v4
• UdpSocket::multicast_loop_v4
• UdpSocket::set_multicast_ttl_v4
• UdpSocket::multicast_ttl_v4
• UdpSocket::set_multicast_loop_v6
• UdpSocket::multicast_loop_v6
• UdpSocket::set_multicast_ttl_v6
• UdpSocket::multicast_ttl_v6
• UdpSocket::set_ttl
• UdpSocket::ttl
• UdpSocket::set_only_v6
• UdpSocket::only_v6
• UdpSocket::join_multicast_v4
• UdpSocket::join_multicast_v6
• UdpSocket::leave_multicast_v4
• UdpSocket::leave_multicast_v6
• UdpSocket::take_error
• UdpSocket::connect
• UdpSocket::send
• UdpSocket::recv
• UdpSocket::set_nonblocking

庫

• std::sync::Once is poisoned if its initialization function fails.
• cell::Ref and cell::RefMut can contain unsized types.
• Most types implement fmt::Debug.
• The default buffer size used by BufReader and BufWriter was reduced to 8K, from 64K. This is in line with the buffer size used by other languages.
• Instant, SystemTime and Duration implement += and -=. Duration additionally implements *= and /=.
• Skip is a DoubleEndedIterator.
• From<[u8; 4]> is implemented for Ipv4Addr.
• Chain implements BufRead.
• HashMap, HashSet and iterators are covariant.

Cargo

• Cargo can now run concurrently.
• Top-level overrides allow specific revisions of crates to be overridden through the entire crate graph. This is intended to make upgrades easier for large projects, by allowing crates to be forked temporarily until they've been upgraded and republished.
• Cargo exports a CARGO_PKG_AUTHORS environment variable.
• Cargo will pass the contents of the RUSTFLAGS variable to rustc on the commandline. rustc arguments can also be specified in the build.rustflags configuration key.

性能

• The time complexity of comparing variables for equivalence during type unification is reduced from O(n!) to O(n). This leads to major compilation time improvement in some scenarios.
• ToString is specialized for str, giving it the same performance as to_owned.
• Spawning processes with Command::output no longer creates extra threads.
• #[derive(PartialEq)] and #[derive(PartialOrd)] emit less code for C-like enums.

Misc

• Passing the --quiet flag to a test runner will produce much-abbreviated output.
• The Rust Project now publishes std binaries for the mips-unknown-linux-musl, mipsel-unknown-linux-musl, and i586-pc-windows-msvc targets.

兼容說明

• std::sync::Once is poisoned if its initialization function fails.
• It is illegal to define methods with the same name in overlapping inherent impl blocks.
• fn item types are zero sized, and each fn names a unique type. This will break code that transmutes fns, so callingtransmute on a fn type will generate a warning for a few cycles, then will be converted to an error.
• Improvements to const evaluation may trigger new errors when integer literals are out of range.

下載

• Source code (zip)
• Source code (tar.gz)
• 安裝下載

  • Linux (.tar.gz)	64-bit	32-bit
    Mac (.pkg)	64-bit	32-bit
    Windows (GNU ABI ?) (.msi)	64-bit	32-bit
    Windows (MSVC ABI ?) (.msi)	64-bit	32-bit