Skip to content

TWiR Release 97 (21 September 2015). #125

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Sep 23, 2015
Merged

TWiR Release 97 (21 September 2015). #125

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
7369eb7
TWiR Release 97 (21 September 2015).
nasa42 Sep 22, 2015
0d14585
Added one more notable change as suggested by @llogiq.
nasa42 Sep 22, 2015
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
139 changes: 139 additions & 0 deletions content/2015-09-21-this-week-in-rust.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,139 @@
Title: This Week in Rust 97
Number: 97
Date: 2015-09-21
Category: This Week in Rust

Hello and welcome to another issue of *This Week in Rust*!
[Rust](http://rust-lang.org) is a systems language pursuing the trifecta:
safety, concurrency, and speed. This is a weekly summary of its progress and
community. Want something mentioned? Tweet us at [@ThisWeekInRust](https://twitter.com/ThisWeekInRust) or [send us an
email](mailto:[email protected]?subject=This%20Week%20in%20Rust%20Suggestion)!
Want to get involved? [We love
contributions](https://github.com/rust-lang/rust/wiki/Note-guide-for-new-contributors).

*This Week in Rust* is openly developed [on GitHub](https://github.com/cmr/this-week-in-rust).
If you find any errors in this week's issue, [please submit a PR](https://github.com/cmr/this-week-in-rust/pulls).

This week's edition was edited by: [nasa42](https://github.com/nasa42) and [llogiq](https://github.com/llogiq).


# Updates from Rust Community

## News & Blog Posts

* <img alt="balloon" class="emoji" title=":balloon:" src="https://cdn.discourse.org/business/images/emoji/emoji_one/balloon.png?v=0"><img alt="tada" class="emoji" title=":tada:" src="https://cdn.discourse.org/business/images/emoji/emoji_one/tada.png?v=0"> [Announcing Rust 1.3](http://blog.rust-lang.org/2015/09/17/Rust-1.3.html). <img alt="tada" class="emoji" title=":tada:" src="https://cdn.discourse.org/business/images/emoji/emoji_one/tada.png?v=0"><img alt="balloon" class="emoji" title=":balloon:" src="https://cdn.discourse.org/business/images/emoji/emoji_one/balloon.png?v=0">
* [Asynchronous IO in Rust](https://blog.skcript.com/asynchronous-io-in-rust-36b623e7b965).
* [An introduction to timely dataflow](https://github.com/frankmcsherry/blog/blob/7a1174e80134c8ce5338d5c62864a2aae835da04/posts/2015-09-14.md). Dataflow computational model written in Rust.
* [An introduction to timely dataflow, part 2.](https://github.com/frankmcsherry/blog/blob/master/posts/2015-09-18.md). Writing super-powerful operators that do whatever you want to the streams.
* [A Pythonista's irresistible attraction to Rust](http://hardcoded.net/articles/pythonistas-irresistible-attraction-rust).
* [Python Modules in Rust](https://ehiggs.github.io/2015/07/Python-Modules-In-Rust/).
* [Fine-grained timing and energy profiling in Servo](http://blog.servo.org/2015/09/11/timing-energy/).
* [Seeking Compilation-Independent Type IDs in Rust](http://davidlegare.ghost.io/seeking-compilation-independent-type-ids-in-rust/).
* [Running Rust code on the 3DS 2: Electric Boogaloo](http://www.idolagames.com/running-rust-code-on-the-3ds-2-electric-boogaloo/).
* [Specialize to reuse](https://aturon.github.io/blog/2015/09/18/reuse/). [Specialization](https://github.com/rust-lang/rfcs/pull/1210) supports clean, inheritance-like patterns out of the box. This post explains how, and discusses the interaction with the “virtual structs” saga.
* [Eliminating branches in Rust](http://kamalmarhubi.com/blog/2015/09/15/eliminating-branches-in-rust-for-fun-but-not-much-profit/).
* [Rust and the Monad trait - Not just higher kinded types](https://m4rw3r.github.io/rust-and-monad-trait/).

## Notable New Crates

* [rustlings](https://github.com/carols10cents/rustlings). Small exercises to get you used to reading and writing Rust code. Includes practice reading and responding to compiler messages!
* [LALRPOP - an LR(1) parser generator for Rust](http://smallcultfollowing.com/babysteps/blog/2015/09/14/lalrpop/).
* [Cuprum Pi](https://github.com/cuprumpi/cupi). A GPIO access library written on Rust for the Raspberry Pi.
* [hostblock](https://github.com/cgag/hostblock). Rust cli app for managing sites blocked via the hosts file.
* [Tokei](https://github.com/Aaronepower/tokei). A CLOC (Count Lines Of Code) program, written in Rust.
* [rust.fish](https://github.com/bheesham/rust.fish). Tab completions for `rustc` and `cargo` in fish shell.
* [rust-xdg](https://github.com/whitequark/rust-xdg). A library that makes it easy to follow the X Desktop Group specifications.

# Updates from Rust Core

116 pull requests were [merged in the last week][merged].

[merged]: https://github.com/issues?q=is%3Apr+org%3Arust-lang+is%3Amerged+merged%3A2015-09-14..2015-09-21

## Notable changes

* [Feature-gate `#[no_debug]` and `#[omit_gdb_pretty_printer_section]`](https://github.com/rust-lang/rust/pull/28522).
* [Warn on `pub extern crate`](https://github.com/rust-lang/rust/pull/28486).
* [Remove Visibility field from enum variants](https://github.com/rust-lang/rust/pull/28442).
* [Add a blanket `impl` for `&mut std::fmt::Write`](https://github.com/rust-lang/rust/pull/28368).
* [Implement overload-able augmented/compound assignments, like `a += b` via the `AddAssign` trait](https://github.com/rust-lang/rust/pull/28345).
* [Implement empty structs with braces](https://github.com/rust-lang/rust/pull/28336).
* [Split up lint interface into pre- and post-expansion lints](https://github.com/rust-lang/rust/pull/28349).

## New Contributors

* Bastien Dejean
* Colin Wallace
* David Szotten
* Dongie Agnir
* Michael McConville
* Peter Reid
* whitequark

## Approved RFCs

Changes to Rust follow the Rust [RFC (request for comments)
process](https://github.com/rust-lang/rfcs#rust-rfcs). These
are the RFCs that were approved for implementation this week:

* [1199: Lay the ground work for building powerful SIMD functionality.](https://github.com/rust-lang/rfcs/pull/1199).
* [1224: Update the RFC process with sub-teams, amongst other things.](https://github.com/rust-lang/rfcs/pull/1224).
* [1238: Revise the Drop Check (`dropck`) part of Rust's static analyses](https://github.com/rust-lang/rfcs/pull/1238).
* [1240: References into `repr(packed)` structs should be `unsafe`](https://github.com/rust-lang/rfcs/pull/1240).

## Final Comment Period

Every week [the team](https://rust-lang.org/team.html) announces the
'final comment period' for RFCs and key PRs which are reaching a
decision. Express your opinions now. [This week's FCPs][fcp] are:

[fcp]: https://github.com/issues?utf8=%E2%9C%93&q=is%3Apr+org%3Arust-lang+label%3Afinal-comment-period+is%3Aopen

* [Forbid wildcard dependencies on crates.io](https://github.com/rust-lang/rfcs/pull/1241).
* [Amend #911 const-fn to allow unsafe const functions](https://github.com/rust-lang/rfcs/pull/1245).
* [Place left arrow syntax (`place <- expr`)](https://github.com/rust-lang/rfcs/pull/1228).

## New RFCs

* [Machine-readable output of tests](https://github.com/rust-lang/rfcs/pull/1284).
* [Improvements to the Time APIs](https://github.com/rust-lang/rfcs/pull/1288).

# Upcoming Events

* [9/23. Columbus Rust Society](http://www.meetup.com/columbus-rs/).
* [9/25. Rust Wellington](http://www.meetup.com/Wellington-Rust-Meetup/events/225362848/).
* [9/28. Rust Sydney Meetup](http://www.meetup.com/Rust-Sydney/events/225175121/).
* 9/30. RustBerlin Hack and Learn.
* [10/1. Rust Meetup Hamburg: Rusty Project Presentations](http://www.meetup.com/Rust-Meetup-Hamburg/events/225391520/).

If you are running a Rust event please add it to the [calendar] to get
it mentioned here. Email [Erick Tryzelaar][erickt] or [Brian
Anderson][brson] for access.

[calendar]: https://www.google.com/calendar/embed?src=apd9vmbc22egenmtu5l6c5jbfc%40group.calendar.google.com
[erickt]: mailto:[email protected]
[brson]: mailto:[email protected]

# fn work(on: RustProject) -> Money

*No jobs listed for this week. Tweet us at [@ThisWeekInRust](https://twitter.com/ThisWeekInRust) to get your job offers listed here!*

# Crate of the Week

This is a new part of this weekly installation, where we will write about a crate that some of you may not know.
Please nominate a crate of your choice at the [rust-users thread](https://users.rust-lang.org/t/crate-of-the-week/2704/15) so we can write about it next week.

This week, Crate of the Week is **[lazy_static](https://crates.io/crates/lazy_static)**. Thanks go to [stebalien](https://users.rust-lang.org/users/stebalien) for the suggestion.

This week's Crate of the Week does something some won't know is possible, and does it in a natural way. You know how in some languages you have to run through hoops to correctly lazily instantiate stuff? Not in Rust, for thanks to the [lazy_static](https://crates.io/crates/lazy_static) crate you just put your static values inside a `lazy_static! { ... }` block, pay a modest runtime cost on lookup and be done.

Btw, this aligns very well with the C++ adage *"... and what you pay for, you couldn't have written any better"*.

# Quote of the Week

*Transmute is taking a dog, sawing its front legs off, gluing on a pair of buffalo wings and telling it it's a duck so it damn well better start quacking
You should not be surprised when you end up with a pile of gore and a dead dog instead of an actual duck :-P* — Quxxy

Thanks to [Ms2ger](https://users.rust-lang.org/users/Ms2ger) for the tip. [Submit your quotes for next week!][submit].

[submit]: http://users.rust-lang.org/t/twir-quote-of-the-week/328