Hello and welcome to the eighth issue of *This Week in Rust*. Due to me being busy and forgetful over the weekend, this is a special issue, *Last Week in Rust*.
<!-- more --> # What's cooking on `master`? Issue churn continues to be negative, -15 this week. A total of 63 PRs were merged. ## Breaking Changes There were impressively few breaking changes last week. - **You now need to pass `--cfg debug` to `rustc` to emit debug logging.** - [**`mod.rs` is now "blessed".**](https://github.com/mozilla/rust/pull/7926). When loading `mod foo;`, rustc will now look for `foo.rs`, then `foo/mod.rs`, and will generate an error when both are present. - [A bunch of `str` functions](https://github.com/mozilla/rust/pull/7996) were renamed or shuffled around to be more consistent. - [`SmallIntSet` was removed](https://github.com/mozilla/rust/pull/7934) in favor for the more efficient, equivalent `BitvSet`. - [`Bitv` and `Bitvset` have switched to external iterators](https://github.com/mozilla/rust/pull/7703). - [`extra::net` and a bunch of other obsolete features](https://github.com/mozilla/rust/pull/7883) have been removed. ## Notable library additions, bugfixes, and cleanup - Various [TCP/UDP additions](https://github.com/mozilla/rust/pull/8040) have been made in the new rt. - Some more [atomic operations](https://github.com/mozilla/rust/pull/8039) have been added. - A [`chain_mut_ref` method](https://github.com/mozilla/rust/pull/7931) was added to `Option`. - [Random access iterators](https://github.com/mozilla/rust/pull/7982) have been implemented. - Some missing [memory orderings on atomic types](https://github.com/mozilla/rust/pull/7993) have been added. - [workcache has seen a bunch of attention](https://github.com/mozilla/rust/pull/7885). - [DList has seen some more cleanup too](https://github.com/mozilla/rust/pull/7944). - [Timers have been added to the new rt](https://github.com/mozilla/rust/pull/7916). - [Vectors now implement `slice_from` and `slice_to`](https://github.com/mozilla/rust/pull/7943). ## Notable compiler additions, bugfixes, and cleanup - [debuginfo for destructured locals and function args](https://github.com/mozilla/rust/pull/8045) is now implemented. - [Raw representations are now consolidated](https://github.com/mozilla/rust/pull/7986). - [Impossible branches on constants](https://github.com/mozilla/rust/pull/8041) are now omitted. - [It is now possible to link against crates with `#[no_std]`](https://github.com/mozilla/rust/pull/7924). - [There is now a warning when matching against NaN](https://github.com/mozilla/rust/pull/8029), since it is impossible to match against NaN (NaN != NaN). - A lot of [default method and trait inheritance bugs](https://github.com/mozilla/rust/pull/8015) have been fixed. - [`uint` enum discriminants are now allowed](https://github.com/mozilla/rust/pull/8000). - The [section placement of static and fn items is now configurable](https://github.com/mozilla/rust/pull/7958). - Some [trans naming modernization has occured](https://github.com/mozilla/rust/pull/7848). - Some unnecessary branches and blocks [have been removed](https://github.com/mozilla/rust/pull/7941), resulting in a 10% speedup of unoptimized rustc. ## Documentation, tools, and other stuff - [Some benchmarks](https://github.com/mozilla/rust/pull/7912), and [some more benchmarks](https://github.com/mozilla/rust/pull/7980). - Crnobog has [fixed](https://github.com/mozilla/rust/pull/8001) [some](https://github.com/mozilla/rust/pull/7979) Windows testsuite issues. - [`Makefile` dependencies](https://github.com/mozilla/rust/pull/7820) have been fixed. `rustc` will never be invoked without its dependencies being built. - [`rust-mode` has been rewritten](https://github.com/mozilla/rust/pull/8031). - [There are some build system changes surrounding the `--cfg debug` changes](https://github.com/mozilla/rust/pull/8020). # Meetings The [Tuesday meeting](https://github.com/mozilla/rust/wiki/Meeting-weekly-2013-07-23) was quite productive. A quick summary: - Graydon wants to investigate using the Memory Pool System as the Rust GC, rather than a bespoke one. The [MPS](http://www.ravenbrook.com/project/mps/) is a very mature and robust memory management library. - The buildbots now collect and report some metrics as JSON. Take a poke in `http://static.rust-lang.org/build-metrics/<git-sha1>/<builder>/<slave>/<metricsfile>.json` if you're interested. - pcwalton proposes allowing `Self` in impls, like in trait definitions. - There was some discussion of destructors taking `self` by value. - There was a proposal to remove `*mut`, but it can be useful. There was no consensus. - There was also some discussion on closures and mutable captures. I don't really have enough context to understand the conversation, something to do with "thunks". - Removing `&const` was discussed as well. The "plan is that we add a lint flag but document it as a reserved word", as it doesn't really seem to be useful. # Discussion + Blog posts - [Iterator Blocks for Rust](http://michaelwoerister.github.io/2013/07/26/Iterator-Blocks.html) - [RFC: Removing `*T`](http://www.reddit.com/r/rust/comments/1j5vbn/rustdev_rfc_removing_t/) - [dherman's OSCON slides](https://speakerdeck.com/dherman/rust-low-level-programming-without-the-segfaults) - [Mozilla is hiring a Rust research engineer](https://careers.mozilla.org/en-US/position/oKiEXfwn) - [An alpha release of the MongoDB Driver](http://blog.mongodb.org/post/56426792420/introducing-the-mongodb-driver-for-the-rust-programming) - [A fairly useless benchmark of random number generation](https://togototo.wordpress.com/2013/07/23/benchmarking-level-generation-go-rust-haskell-and-d/) # Projects - [color-rs: A library that provides types and conversions for working with various color formats.](https://github.com/bjz/color-rs) - [grease-bench: a runtimeless benchmarker](https://github.com/Aatch/grease-bench) - [rustfind, a "jump to definition" tool](https://github.com/dobkeratops/rustfind) - [RustyXML, a pure-Rust XML parser](https://github.com/Florob/RustyXML) _______________________________________________ Rust-dev mailing list [email protected] https://mail.mozilla.org/listinfo/rust-dev
