Sorry that I forgot to send this earlier. Content from http://cmr.github.io/blog/2013/08/04/this-week-in-rust/.
-- Hello and welcome to the ninth issue of *This Week in Rust*. This week brings the new `for` loop, which is very exciting, as well as a bunch of runtime changes and cleanup. <!-- more --> # What's cooking on `master`? Issue churn was +4 this week. A total of 63 PRs were merged (again). ## Breaking Changes - **The `for` loop now uses external iterators.** This means any code written to use the old internal iterator protocol will no longer work. See the [iterator tutorial](http://static.rust-lang.org/doc/tutorial-container.html) for more information on how to use it. Related pull requests: [#8141](https://github.com/mozilla/rust/pull/8141), [#8184](https://github.com/mozilla/rust/pull/8184), [#8190](https://github.com/mozilla/rust/pull/8190), [#8244](https://github.com/mozilla/rust/pull/8244). A few uses now require `do` rather than `for` because they cannot/have not been implemented in terms of external iterators. - `unsafe` is [no longer allowed](https://github.com/mozilla/rust/pull/8235) for functions in `extern` blocks: they are all unsafe. - The [`extra::dbg` module](https://github.com/mozilla/rust/pull/8175) has been removed. - `uint::range` and all its friends have been replaced with an [external iterator](https://github.com/mozilla/rust/pull/8216), that is in the prelude. Code like the following now works: ``` for x in range(0, 10) { println(x.to_str()); } ``` - The pipes compiler (the thing driving `proto!`) [has been removed](https://github.com/mozilla/rust/pull/8170), as it saw limited use, was very old, and was a significant maintenance burden. - `PortSet` [has been removed](https://github.com/mozilla/rust/pull/8164) from std, as the new scheduler does not support it. - A bunch of old task APIs [have been removed](https://github.com/mozilla/rust/pull/8139), aslo in preparation for the new schduler. - `is_utf8` now [rejects overlong encodings](https://github.com/mozilla/rust/pull/8133). - The iterator adaptors [no longer have the Iterator suffix](https://github.com/mozilla/rust/pull/8090), same with [str and vec iterators](https://github.com/mozilla/rust/pull/8095) as well. ## newrt changes A bunch of newrt things landed this week, so it gets its own section. - Some [bugs preventing the arc and sync tests from passing](https://github.com/mozilla/rust/pull/8234) have been fixed. - The new scheduler now supports [the `SingleThreaded` spawn mode](https://github.com/mozilla/rust/pull/8221). - A bunch of work with task killing [has landed](https://github.com/mozilla/rust/pull/8195). - Some [major TLS changes](https://github.com/mozilla/rust/pull/8116) also landed. - Tasks can [now be named](https://github.com/mozilla/rust/pull/8158). - [`select` on newrt pipes](https://github.com/mozilla/rust/pull/8008) has been implemented. ## Notable library additions, bugfixes, and cleanup - `Map::contains_key` is [now a default method](https://github.com/mozilla/rust/pull/8246) implemented in terms of `Map::find` - A `dynamic_lib` segfault [has been fixed](https://github.com/mozilla/rust/pull/8219). - A keyed `HashMap` constructor is [now exposed](https://github.com/mozilla/rust/pull/8186) for runtimeless programs that want to use it. - The `Str` trait now has an [`into_owned` method](https://github.com/mozilla/rust/pull/8204) to avoid copies when you already have a `~str`. - A bunch of [SHA1 and SHA2 cleanup/optimizations](https://github.com/mozilla/rust/pull/8174) landed. I hear that the speed is almost optimal, only a few cycles/byte short of Intel's optimized implementation. - Errno coverage has been [significantly expanded for Linux](https://github.com/mozilla/rust/pull/8193). I added all of the ones that were missing, at least the ones that were present on my system. - `assert!()` without a message [now does less allocation](https://github.com/mozilla/rust/pull/8150). - '\' is [no longer treated as a path separater](https://github.com/mozilla/rust/pull/8138) on POSIX system. - `getopt`'s `opts_str` [has been corrected to use more than just the first element of the vector](https://github.com/mozilla/rust/pull/8135). - Some more methods [were added](https://github.com/mozilla/rust/pull/8115) in `std::num`. - An iterator over the offsets of each character in a string [was added](https://github.com/mozilla/rust/pull/8082). - A bunch of `RandomAccessIterator` implementations [have been added](https://github.com/mozilla/rust/pull/8120). - `Clone` and `DeepClone` are [now implemented](https://github.com/mozilla/rust/pull/8109) for `extern "Rust" fn`. ## Notable compiler additions, bugfixes, and cleanup - A `cfg!` syntax extension [has been added](https://github.com/mozilla/rust/pull/8188) for conditionally running code based on crate configuration, similar to what `#[cfg]` does for conditional compilation. It expands into a true/false constant, so LLVM should optimize out the dead branches. - Some more codegen tests [have been added](https://github.com/mozilla/rust/pull/8165). - `copy` [has been removed as a keyword](https://github.com/mozilla/rust/pull/8162). - Static struct initializers [can now contain `..base`](https://github.com/mozilla/rust/pull/8091) for functional update. - Take glue [has been unified](https://github.com/mozilla/rust/pull/8146) for unique pointer type. - Pointer arithmetic is [now implemented with GEP](https://github.com/mozilla/rust/pull/8121) rather than casting to int and back to the pointer. - Some more AST types [were renamed](https://github.com/mozilla/rust/pull/8107). - Cross-crate conditions [now work](https://github.com/mozilla/rust/pull/8185). ## Documentation, tools, and other stuff - LLVM assertions [can now be disabled](https://github.com/mozilla/rust/pull/8147) with a configure option. - Benchmarking can [now be disabled](https://github.com/mozilla/rust/pull/8111) by passing `NO_BENCH=1` to make. - `NO_REBUILD` [no longer requires a re-boostrap](https://github.com/mozilla/rust/pull/8110), which should make debug cycles on libstd much shorter. - `vec` [now has module documentation](https://github.com/mozilla/rust/pull/7223). - rustpkg [now handles tags](https://github.com/mozilla/rust/pull/8032), and not just version numbers, in the package ID. # Meetings The [Tuesday meeting](https://github.com/mozilla/rust/wiki/Meeting-weekly-2013-07-30) this week was quite meaty. I'm not going to try to summarize it, as it seems no real decisions were made. # Discussion + Blog posts - [Visibility scopes in Rust Debug Info](http://michaelwoerister.github.io/2013/08/03/visibility-scopes.html). - [Architecting Servo: Pipelines and Parallelism](https://air.mozilla.org/2013-intern-kuehn/), a talk by Tim Kuehn. - [Runtimeless sprocketnes](http://www.reddit.com/r/rust/comments/1jo431/runtimeless_sprocketnes/). - [Porting machine learning algorithms to Rust](http://www.reddit.com/r/rust/comments/1joy7f/porting_machine_learning_algorithms_to_rust/). - [RFC: Overloadable dereference operator](https://mail.mozilla.org/pipermail/rust-dev/2013-July/005039.html). # External projects - [RustGnuplot](https://github.com/SiegeLord/RustGnuplot) was updated to latest Rust. - A [protobuf implementation](https://github.com/stepancheg/rust-protobuf) has been started. - [rustsqlite](https://github.com/linuxfood/rustsqlite) has been updated to latest Rust. - A [library for HTML escaping](https://github.com/veddan/rust-htmlescape) has been created. - A [library for procedurally generating noise](https://github.com/bjz/noise-rs) has been created. - A [pure-Rust implementation of Keccak](https://github.com/MarkJr94/rust-keccak) has been created. - [rust-zmq](https://github.com/erickt/rust-zmq) has been updated to latest Rust, as well as cleaner error/constant interface. - [q3](https://github.com/Jeaye/q3) now does multithreaded rendering. _______________________________________________ Rust-dev mailing list [email protected] https://mail.mozilla.org/listinfo/rust-dev
