Rust周报 409(译)

• this-week-in-rust
• 日期：2021-09-22
• 原文：409 期

你好，欢迎再来一期本周的螃蟹行情！Rust是一种追求三位一体的系统语言：安全性、并发性和速度。这是它的进展和社区的每周总结。有什么要说的吗？推特@ThisWeekInRust或向我们发送请求。 想参与吗？我们热爱贡献.

这本周的螃蟹行情是在在 Github 上公开的。如果你在本周的问题中发现任何错误，请提交 PR。 Rust*公开开发on GitHub.如果您在本周的问题中发现任何错误，please submit a PR

Updates from Rust Community

Official

RustConf 2021 (大会视频来啦，可惜差不多都是油管上的)

• Project Update: Lang Team by Niko Matsakis
• Project Update: Libs Team by Mara Bos
• Move Constructors: Is it Possible? by Miguel Young de la Sota
• The Importance of Not Over-Optimizing in Rust by Lily Mara
• Identifying Pokemon Cards by Hugo Peixoto
• Fuzz Driven Development by Midas Lambrichts
• Writing the Fastest GDBT Library in Rust by Isabella Tromba
• Whoops! I Rewrote it in Rust by Brian Martin
• How I Used Rust to Become Extremely Offline by Luke Westby
• Supercharging Your Rust Code With Five Little-Known Attributes by Jackson Lewis
• Compile-Time Social Coordination by Zac Burns
• Hacking rustc: Contributing to the Compiler by Esteban Kuber
• This Week in Rust: 400 Issues and Counting! by This Week in Rust’s very own Lead Editor Nell Shamrell-Harrington!

Project/Tooling Updates

• rust-analyzer Changelog #95
• Rome will be rewritten in Rust
• SixtyFPS (GUI crate) weekly report 19th of September
• Introducing SeaORM: An async & dynamic ORM for Rust
• wgpu 联盟带上 Deno
• Mesa 中的 Rust 代码试验，正在进行中
• Goscript is now language feature complete
• An update on Memory Safety in Chrome
• This week in Databend #8

Observations/Thoughts

• How to use Vectors in Rust?
• Message Passing in Rust Threads is very helpful
• New project: ‘Wheel of Fortune’（一款角色扮演类游戏） solver! (and Rust is still faster than Python)
• Rustacean Principles
• Rustacean Principles, Continued
• 全栈 Rust
• Rust 的可学习性
• The Rust Programming Language for 游戏工具
• Reality Check for Cloudflare Wasm Workers and Rust
• Rust on the MOS 6502: Beyond Fibonacci
• Rocket: A Web Framework for Rust
• Oxidizing Kraken: Improving Kraken Infrastructure Using Rust
• 棘手的兼容性问题 - recent changes to std::io::ErrorKind
• [audio] flutter/rust roundtable - flying high with flutter #24
• [audio] rustacean station: from zero to production with luca palmieri
• [audio] arewepodcastyet 08 with jon ferdinand ronge gjenset
• [audio] rustacean station: rust code coverage with daniel mckenna
• [video] rust4ml @ rust dc w/ vlad orlov
• [video] in-kernel, fast-path packet processing with af_xdp @ rust dc w/ collins huff

Rust Walkthroughs

• 怎样对应用的所有层的交流信息，实现端对端的加密
• Rust on ESP32
• 怎么在树莓派上，编译 Rust and LLVM for ESP32
• Optimize Rust binaries size with cargo and Semver
• Combining Axum, Hyper, Tonic, and Tower for hybrid web/gRPC apps: Part 2
• Combining Axum, Hyper, Tonic, and Tower for hybrid web/gRPC apps: Part 3
• Combining Axum, Hyper, Tonic, and Tower for hybrid web/gRPC apps: Part 4
• First steps with an Arduino board（类树莓派产品） and Rust
• Full-stack Rust: 一个完整的教程示例
• 设计 状态机 in Rust
• Optimizing a JavaScript library with WebAssembly, 一个失败的尝试！
• [series] url shortener with rust, svelte, & aws
• [CN] string in rust
• [video] from python to rust - all episodes
• [video] 1 problem, 16 programming languages (c++ vs rust vs haskell vs python vs apl…)
• [video] explaing rust analyzer 15: error resilient parsing
• [video] getting started with rust 🦀 2021: 6. library api design overhaul, async and more
• [video] [series] Rust for Java Developers

Miscellaneous

• Do Developers Read Compiler Error Messages?
• Alpine: System change proposal: Rust in main
• Rust Adds Support For The Motorola M68000 Processors
• Godbolt（给出各种语言源码的汇编源码）探险 without crate limitations, in Visual Studio Code
• 其他编程语言中，你有想念的库吗?
• Rust for Rustaceans is off to the printer!
• GCC codegen now under rust-lang organization
• Rust in Qemu, host support matrix
• Chrome - Borrowing Trouble: The Difficulty Of A C++ Borrow Checker
• [picture] my rust project was featured in one of europe’s biggest computer magazines (heise c’t)
• [video] wrote a neat little maze solver. largest solved so far is 125k x 125k. here’s a smaller 512x512

Crate of the Week

本周的箱子是flowistry，一个 VS 代码扩展，用于可视化代码中的数据流。

Willi Kappler谢谢你的建议！

Please submit your suggestions and votes for next week!

Call for Participation

一直想为开源项目做出贡献，但不知道从哪里开始？每周我们都会重点介绍 Rust 社区的一些任务，供您选择并开始！

其中一些任务也可能有可用的导师，请访问任务页面了解更多信息。

• ockam-network/ockam - Ockam TCP Transport using smoltcp
• ockam-network/ockam - File Transfer over end-to-end encrypted secure channels

如果您是 Rust 项目的所有者，并且正在寻找贡献者，请提交任务here.

Updates from Rust Core

共收到 256 个拉取请求merged in the last week

• 添加 ARMv6K Nintendo 3DS Tier 3 target
• 添加对 m68k 的初始支持
• 在 intercrate 模式下，禁用 evaluation cache
• use a separate interner type for UniqueTypeId
• accept m!{ .. }.method() and m!{ .. }? statements
• recover from Foo(a: 1, b: 2)
• emit clearer diagnostics for parens around for loop heads
• make diagnostics clearer for ? operators
• improve error message for type mismatch in generator arguments
• improve error message for missing trait in trait impl
• add a separate error for dyn Trait in const fn
• suggest replacing an inexisting field for an unmentioned field
• suggest better place to add call parentheses for method expressions wrapped in parentheses
• suggest removing bad parens in (recv.method)()
• suggest removing #![feature] for library features that have been stabilized
• don’t lint about missing code examples in derived traits
• point at argument instead of call for their obligations
• reuse existing shared Lrc for MatchImpl parent
• fast reject for NeedsNonConstDrop
• 通过使用一个 on-disk hash table，简化 lazy DefPathHash decoding
• avoid codegen for Result::into_ok in lang_start
• use <[T; N]>::map in Sharded instead of SmallVec and unsafe code
• introduce a fast path that avoids the debug_tuple abstraction when deriving Debug for unit-like enum variants
• make UnsafeCell::get_mut const
• const drop
• don’t inline OnceCell initialization closures
• allow panic!("{}", computed_str) in const fn
• fix potential race in AtomicU64 time monotonizer
• futures: fix Unusable Sink implementation on Scan
• clippy: change while_let_on_iterator suggestion to use by_ref()
• clippy: improve accuracy of mut_key
• clippy: new lint: same_name_method

Rust Compiler Performance Triage

美好的一周：进步多于退步。

分诊由 @pnkfelix. 修订范围：9f85cd6f2..7743c9f

2 次退步，4 次改进，8 次混合；他们中的某某在汇总中

共进行了 44 次比较

Full report here

Approved RFCs

跟随 Rust RFC (request for comments) process. 以下是本周批准实施的 RFC：

• RFC: Supertrait item shadowing

Final Comment Period

每周the team宣布正在作出决定的 RFC 和关键 PRs 的“最终评论期”。现在就表达你的意见。

RFCs

目前没有 RFC 处于最终评论期。

Tracking Issues & PRs

• [disposition: merge] Stabilize RFC 2345: Allow panicking in constants
• [disposition: merge] Perform type inference in range pattern
• [disposition: close] Disable unused_must_use for statically known bools
• [disposition: merge] Decide whether asm! and/or global_asm! should be exported from the prelude.
• [disposition: merge] Make #[derive(A, B, …)] cfg-eval its input only for A, B, … and stabilize feature(macro_attributes_in_derive_output)
• [disposition: merge] Make *const (), *mut () okay for FFI

New RFCs

• [Help wanted] First draft of patchfile RFC
• Multiple artifact deps on the same crate with different names, for different targets

Quote of the Week

多年来，该项目的压力已经伤害了很多人，我认为可能唯一的恢复途径，就是与之保持一定距离。

– Graydon Hoare on twitter

Thanks to mmmmib for the suggestion!

Please submit quotes and vote for next week!

This Week in Rust is edited by: nellshamrell, llogiq, and cdmistman.

Discuss on r/rust