Rust周报 408(译)

• this-week-in-rust
• 日期：2021-09-15
• 原文：408 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

• Announcing Rust 1.55.0
• [video] rustconf 2021 video stream

Newsletters

Project/Tooling Updates

• Announcing Sycamore v0.6.0: Faster and faster with plenty of fixes and features…
• SixtyFPS (GUI crate) weekly report 12th of September
• This week in Databend #7
• Introducing DHCProto
• IntelliJ Rust Changelog #155
• Rust Analyzer Changelog #94
• Introducing Matchbox

Observations/Thoughts

• Building Cloudflare Images in Rust and Cloudflare Workers
• Zenoh performance: a stroll in Rust async wonderland
• [audio] rust game dev podcast - interview with remco and basz

Rust Walkthroughs

• How to Write and Compile Shellcode in Rust
• How to implement HTTP Long Polling in Rust
• An experimental Diesel-based CRUD for Rocket
• Rust cli example #2: Ferris hunts errors
• Test Cases in Rust are simple to write
• Full-stack sum types with TypeScript, Rust and Postgres
• Tokio stack overview: Runtime
• [video] Java 开发人员的 Rust -简介[Beginners]
• [video] fltk rust: a new basics tutorial
• [video] rust for linux

Miscellaneous

• Native Rust support on Cloudflare Workers
• Launching Porta Ecosystem Grants
• LLVM internals, part 3: from bitcode to IR

Crate of the Week

本周的板条箱是qcell，它有个类型，其工作方式，类似于编译时的RefCell。

Soni L.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。

• getsynth/synth - Allow unbounded numbers
• OpenSUSE Rust Usage Survey
• RustFest CFP is open

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 278 个请求merged in the last week

• fix ICE for functions with more than 65535 arguments
• detect stricter constraints on gats where clauses in impls vs trait
• ignore derived Clone and Debug implementations during dead code analysis
• fix non-capturing closure return type coercion
• suggest items be borrowed in for i in items[x..]
• suggest wrapping expr in parentheses on invalid unary negation
• improve error message when _ is used for in/inout asm operands
• emit suggestion when passing byte literal to format! macro
• use smaller spans for some structured suggestions
• use more correct span data in for loop desugaring
• use FxHashSet instead of Vec for well formed tys
• mmap the incremental data instead of reading it
• BTreeMap/BTreeSet::from_iter: use bulk building to improve the performance
• add proc_macro::Span::{before, after}
• hashbrown: insert_unique_unchecked operation
• clippy: add new lint iter_not_returning_iterator

Rust Compiler Performance Triage

本周相当繁忙，在几个基准上有一些重大改进。一些更大的汇总结果出现了，部分是从一次临时 CI 停机中恢复，此后 CI 继续出现故障。这可能是我们的结果中，出现不寻常汇总的原因。

分诊由 @simulacrum. 修订范围：69c4aa290..9f85cd6

退步 2 次，改进 2 次，混合 4 次；其中 2 个在汇总中

共进行了 31 次比较

Full report here.

Approved RFCs

锈蚀之后会发生变化RFC (request for comments) process. 以下是本周批准实施的 RFC：

• Rust-lang crate ownership policy
• Scrape code examples from examples/ directory for Rustdoc

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: close] Disable unused_must_use for statically known bools
• [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
• [disposition: merge] Tracking issue Iterator map_while

New RFCs

本周没有提出新的 RFC。

Quote of the Week

Edition!

– Niko and Daphne Matsakis on YouTube

Thanks to mark-i-m 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