Notices by Masaki Hara (qnighy@qnmd.info), page 34

Masaki Hara (qnighy@qnmd.info)'s status on Friday, 22-Feb-2019 09:12:19 JST Masaki Hara

同じ人間が2人いるドッペルゲンガー的なシチュエーションに特化したサークルとかあるのか、世界は広い

In conversation Friday, 22-Feb-2019 09:12:19 JST from qnmd.info permalink
Masaki Hara (qnighy@qnmd.info)'s status on Friday, 22-Feb-2019 09:08:30 JST Masaki Hara

Google+誰も使ってないと思ってたけどTerence Taoがちょっとしたアナウンスのために使ってたのか https://terrytao.wordpress.com/2019/02/21/two-announcements/
In conversation Friday, 22-Feb-2019 09:08:30 JST from qnmd.info permalink
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1. No result found on File_thumbnail lookup.
  
  Two announcements
  
  By Terence Tao from What's new
  Now that Google Plus is closing, the brief announcements that I used to post over there will now be migrated over to this blog. (Some people have suggested other platforms for this also, such as Twitter, but I think for now I can use my existing blog to accommodate these sorts of short posts.)
  
  The NSF-CBMS regional research conferences are now requesting proposals for the 2020 conference series. (I was the principal lecturer for one of these conferences back in 2005; it was a very intensive experience, but quite enjoyable, and I am quite pleased with the book that resulted from it.)
  
  The awardees for the Sloan Fellowships for 2019 have now been announced. (I was on the committee for the mathematics awards. For the usual reasons involving the confidentiality of letters of reference and other sensitive information, I will be unfortunately be unable to answer any specific questions about our committee deliberations.)
Masaki Hara (qnighy@qnmd.info)'s status on Thursday, 21-Feb-2019 09:54:02 JST Masaki Hara

https://users.rust-lang.org/t/when-will-benchmark-testing-be-stable/25482/2
へー、criterionというライブラリを使えばstable Rustでもベンチマーキングができるらしい
In conversation Thursday, 21-Feb-2019 09:54:02 JST from qnmd.info permalink
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1. When will benchmark testing be stable?
  
  from The Rust Programming Language Forum
  
  I can’t answer your question, but check out criterion, which provides benchmarking on stable.
Masaki Hara (qnighy@qnmd.info)'s status on Thursday, 21-Feb-2019 09:52:47 JST Masaki Hara

https://github.com/rust-lang/rust/issues/43570
RefCell::replace_withをマージする方向でFCPが開始した
In conversation Thursday, 21-Feb-2019 09:52:47 JST from qnmd.info permalink
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1. Tracking issue for RefCell::{replace, swap} · Issue #43570 · rust-lang/rust
  
  from GitHub
  
  Tracking issue for rust-lang/rfcs#2057 Implement the functionality Add documentation Stabilize!
Masaki Hara (qnighy@qnmd.info)'s status on Thursday, 21-Feb-2019 09:47:32 JST Masaki Hara

https://github.com/rust-lang/rfcs/issues/798
このスレッドが急に盛り上がってる。JDBCのような言語標準がないのは残念だというコメントからかな。個人的にはdieselが十分うまくやってると思うし、むしろ言語として標準を定めるほうが少数派かなと思うけど
In conversation Thursday, 21-Feb-2019 09:47:32 JST from qnmd.info permalink
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1. Domain not in remote thumbnail source whitelist: avatars3.githubusercontent.com
  
  Generic SQL bindings · Issue #798 · rust-lang/rfcs
  
  from GitHub
  
  Issue by brson Wednesday Jun 04, 2014 at 22:17 GMT For earlier discussion, see rust-lang/rust#14658 This issue was labelled with: A-libs, I-enhancement in the Rust repository We need a generic libr...
Masaki Hara (qnighy@qnmd.info)'s status on Thursday, 21-Feb-2019 08:20:07 JST Masaki Hara

この話、多分被害は本物だというのが不幸だよね。加害者が実在しないだけで……

In conversation Thursday, 21-Feb-2019 08:20:07 JST from qnmd.info permalink
Masaki Hara (qnighy@qnmd.info)'s status on Wednesday, 20-Feb-2019 20:13:35 JST Masaki Hara

https://github.com/rust-lang/rust/issues/58590
RustにはターゲットがUNIX-likeかどうかをあらわす cfg(unix) というフラグがあるが、Fuchsiaに関してはcfg(not(unix))のほうが望ましいとFuchsiaの開発者が提案している。
In conversation Wednesday, 20-Feb-2019 20:13:35 JST from qnmd.info permalink
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1. Fuchsia is not unix · Issue #58590 · rust-lang/rust
  
  from GitHub
  
  Currently, the Fuchsia target is part of the unix target_family. I'd like to suggest that this should not be the case, and that #cfg[unix] should be false for Fuchsia. First, I want to capture ...
Masaki Hara (qnighy@qnmd.info)'s status on Wednesday, 20-Feb-2019 11:56:40 JST Masaki Hara

https://github.com/rust-lang/rust/pull/58583
const generics用のデータ構造をTyに追加するプルリクが出てる
In conversation Wednesday, 20-Feb-2019 11:56:40 JST from qnmd.info permalink
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1. Add const generics to ty (and transitive dependencies) by varkor · Pull Request #58583 · rust-lang/rust
  
  from GitHub
  
  Split out from #53645. This work is a collaborative effort with @yodaldevoid. There are a number of stubs. Some I plan to leave for the next PRs (e.g. infer and rustdoc). Others I can either fix up...
Masaki Hara (qnighy@qnmd.info)'s status on Wednesday, 20-Feb-2019 09:53:59 JST Masaki Hara

https://github.com/rust-lang/cargo/pull/6664
おお、cargo checkに強制的な再ビルドを指示するフラグを追加しようとしている人がいる
In conversation Wednesday, 20-Feb-2019 09:53:59 JST from qnmd.info permalink
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1. check subcommand should force rebuild by JoshMcguigan · Pull Request #6664 · rust-lang/cargo
  
  from GitHub
  
  This builds on the work from #5944, and pushed forward rust-lang/rust-clippy#2604. If ensures cargo check always does a rebuild. The one thing I'm not sure of is whether this should be optional...
Masaki Hara (qnighy@qnmd.info)'s status on Monday, 18-Feb-2019 21:38:26 JST Masaki Hara
in reply to

るものだった。あなたとクロージャー、今すぐダウンロード

In conversation Monday, 18-Feb-2019 21:38:26 JST from qnmd.info permalink
Masaki Hara (qnighy@qnmd.info)'s status on Monday, 18-Feb-2019 21:37:51 JST Masaki Hara

人間族とジャバ族。2つの種族は生まれ、出会い、そして互いに背を向けた。もう誰も発端を知らない15年戦争から300年。人間族とジャバ族の混血であるドッティーは流浪の冒険者として暮らしていたが、ある日クロージャーという混血の少女と出会う。同じ混血でありながらその容貌はドッティーと大きく異な

In conversation Monday, 18-Feb-2019 21:37:51 JST from qnmd.info permalink
Masaki Hara (qnighy@qnmd.info)'s status on Monday, 18-Feb-2019 10:14:38 JST Masaki Hara

https://github.com/rust-lang/rust/pull/58503
const generics (C++のように、整数などの値をジェネリクス引数として使えるようにする機能) のHIR loweringのプルリクが出てる。今まではパーサー(AST)までしか実装されてなかったが、これで少し進む。ASTを名前解決していくつかの脱糖をしたのがHIR。
In conversation Monday, 18-Feb-2019 10:14:38 JST from qnmd.info permalink
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1. Add const generics to the HIR by varkor · Pull Request #58503 · rust-lang/rust
  
  from GitHub
  
  Split out from #53645. cc @yodaldevoid r? @eddyb
Masaki Hara (qnighy@qnmd.info)'s status on Monday, 18-Feb-2019 09:14:23 JST Masaki Hara

フィクションで、触手生命体が繁殖のためにヒトの体を使うことを苗床と言うけど、誰が最初に苗床という言葉を使ったんだろう

In conversation Monday, 18-Feb-2019 09:14:23 JST from qnmd.info permalink
Masaki Hara (qnighy@qnmd.info)'s status on Sunday, 17-Feb-2019 20:09:38 JST Masaki Hara

https://users.rust-lang.org/t/prevent-cargo-from-installing-dependency-of-dependency-libraries/25318
古いRust(1.19.0)で動くように依存解決できない、助けてくれという質問。古いコンパイラで適切な依存解決をするための仕組み(MSRV)は未整備で基本的には茨の道だけど(コンパイラを上げるほうがずっとずっと楽)、どうしても必要な場合のテクが色々集まってる
In conversation Sunday, 17-Feb-2019 20:09:38 JST from qnmd.info permalink
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  Prevent cargo from installing dependency of dependency libraries
  
  from The Rust Programming Language Forum
  
  Hi, I have a Rust version 0.19.0, which is really really old. I cannot do anything about it though. Now i am trying to use a flatbuffers crate which has the latest version in my code. Flatbuffers started supporting rust in 2018. When i add flatbuffers as my dependency in Cargo.toml file, it fetches another dependent library smallvec. I get this error while building. error[E0432]: unresolved import std::mem::ManuallyDrop –> /root/.cargo/git/checkouts/rust-smallvec-f85065a4e6040d19/a775b5f/li...
Masaki Hara (qnighy@qnmd.info)'s status on Saturday, 16-Feb-2019 13:47:55 JST Masaki Hara

> 命名「six」は、これは 2*3 が 6 であることから来ています。なぜ足さないかって? 掛け算はより足し算より強いからさ、いや…どのみち “five” は既に (ご存知の通り死にかけの)Zope Five プロジェクトによって奪われてますから。
https://hhsprings.bitbucket.io/docs/translations/python/six-doc-ja/
In conversation Saturday, 16-Feb-2019 13:47:55 JST from qnmd.info permalink
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Masaki Hara (qnighy@qnmd.info)'s status on Saturday, 16-Feb-2019 10:11:23 JST Masaki Hara

SHOPで泥棒をした結果メイドロボにされてしまったリンク

In conversation Saturday, 16-Feb-2019 10:11:23 JST from qnmd.info permalink
Masaki Hara (qnighy@qnmd.info)'s status on Friday, 15-Feb-2019 10:17:21 JST Masaki Hara

&mut HashSet<i32> が与えられるので、全要素に1を足せというのはいい練習問題っぽい

In conversation Friday, 15-Feb-2019 10:17:21 JST from qnmd.info permalink
Masaki Hara (qnighy@qnmd.info)'s status on Thursday, 14-Feb-2019 12:25:45 JST Masaki Hara

https://github.com/rust-lang/rust/issues/58450
検索バーに入れようとして投稿してしまった例だ。危ない検索クエリじゃなくてよかったね
In conversation Thursday, 14-Feb-2019 12:25:45 JST from qnmd.info permalink
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1. Domain not in remote thumbnail source whitelist: avatars3.githubusercontent.com
  
  may_dangle · Issue #58450 · rust-lang/rust
  
  from GitHub
Masaki Hara (qnighy@qnmd.info)'s status on Thursday, 14-Feb-2019 10:44:41 JST Masaki Hara

https://github.com/rust-lang/rfcs/pull/2635
usizeの整数オーバーフローの挙動を変える提案。整数オーバーフローはRustの数少ない不定動作のひとつで、現在の実装ではデバッグビルドではパニックになる一方リリースビルドでは巡回する。しかしusizeのオーバーフローはunsafeコードで致命的なミスに繫がるので防ぎたい
In conversation Thursday, 14-Feb-2019 10:44:41 JST from qnmd.info permalink
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1. Domain not in remote thumbnail source whitelist: avatars2.githubusercontent.com
  
  RFC changing the overflow behavior for usize in release builds to panic by alex · Pull Request #2635 · rust-lang/rfcs
  
  from GitHub
  
  Rendered
Masaki Hara (qnighy@qnmd.info)'s status on Thursday, 14-Feb-2019 10:29:04 JST Masaki Hara

https://github.com/rust-lang/cargo/issues/6660
ビルドのパイプライン化の提案が出ている。クレートBがクレートAに依存するとき、現在はクレートAのコンパイルを終えてからクレートBのコンパイルをしている。しかし、クレートBのコンパイルに必要なのはAのメタデータ(モジュール情報や型情報)だけなので、並列化が可能
In conversation Thursday, 14-Feb-2019 10:29:04 JST from qnmd.info permalink
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1. Implement "pipelined" rustc compilation · Issue #6660 · rust-lang/cargo
  
  from GitHub
  
  One possible feature we've talked about for a long time but never got around to implementing is the concept of pipelined rustc compilation. Currently today let's say that we have a crate A ...

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