Rust周报 393(译)

• this-week-in-rust
• 日期：2021-06-02
• 原文：393 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。

Updates from Rust Community

本周没有官方博客文章或研究论文。

Newsletters

• RiB Newsletter #24 - Bridges

Project/Tooling Updates

• rust-analyzer Changelog #79
• GCC Rust Monthly Report #6 May 2021
• This Week In TensorBase 5
• Announcing tower-http
• Turning rusty tech into Rust ~ When you need to FTP but don’t want to

Observations/Thoughts

• 面向对象编程概念 in Rust
• My first cup of Rust
• 解密：Mutability and References in Rust
• The simpler alternative to GCC-RS
• Why I support GCC-rs
• Taking Rust for a Test Drive
• A Polkadot（数字货币平台） 事后分析 - 24.05.2021
• The Most Annoying Bug I’ve Had To Track Down
• [video] There and back again - Our Rust adoption journey [Open Source North 2021 / Luca Palmieri]

Rust Walkthroughs

• RESTful API in Sync & Async Rust
• Rust Closures will make your life easy.
• Idiomatic Rust Binary Search Extended
• The Relation between “Rust and Safe Programming” !!
• Tightness Driven（数据结构的紧密程度驱动） Development in Rust
• Writing a “hello world” Riscv Kernel with Nix in Rust
• Rust for Fsharpers and F# for Rustaceans
• Creating a Deno plugin with Rust
• How to use the Firebird database with Rust language
• Reactive UI components in Rust
• Redis Streams in Action - Part 2 (Rust app to consume from the Twitter Streaming API)
• How to make plugins system with Rust and WebAssembly
• Getting started with ECS using Planck ECS
• Designing Rust bindings for REST APIs
• WebRTC Video chat tutorial using Rust+WASM

• [ZH] Take Web Screenshot & Make Watermark in Rust (Rust 中，对网址进行异步快照，并添加水印效果的实践)
• [video] A Firehose of Rust, for busy people who know some C++

Miscellaneous

• New Rust book: Rust for Rustaceans by Jon Gjengset
• Just to say, thank you

Crate of the Week

本周的箱子是rust-codegen-gcc，针对 GCC 的，‘基于 LLVM 的 Rust 编译器后端’的替代品。

谢谢Josh Triplett的建议

Submit your suggestions and votes for next week！

Call for Participation

一直想为开源项目做贡献但不知道从哪里开始？每周我们都会重点介绍来自 Rust 社区的一些任务，供您挑选并开始使用！

其中一些任务可能还有可用的导师，请访问任务页面了解更多信息。

如果您是 Rust 项目所有者并且正在寻找贡献者，请提交任务here.

• Backroll-rs is looking for contributors

Updates from Rust Core

255 个拉取请求是merged in the last week

• post-monomorphization errors traces MVP
• make closures inherit their parent’s “safety context”
• fix low-memory issue and lower tier platforms with no sysinfo
• fix bootstrap using host exe suffix for cargo
• const-eval: disallow unwinding across functions that !fn_can_unwind()
• deal with const_evaluatable_checked in ConstEquate
• disallow shadowing const parameters
• optimize proc macro bridge
• fix incorrect suggestions for E0605
• stabilize member constraints
• E0599 suggestions and elision of generic argument if no canditate is found
• a bit more polish on const eval errors
• merge CrateDisambiguator into StableCrateId
• do not try to build LLVM with Zlib on Windows
• use u64 for the GroupWord on WebAssembly
• don’t hash thir_body
• emit a hard error when a panic occurs during const-eval
• don’t sort a Vec before computing its DepTrackingHash
• demote ControlFlow::{from, into}_try to pub(crate)
• remove Ipv6Addr::is_unicast_link_local_strict
• make Step trait safe to implement
• fix unsoundness of Debug implementation for linked_list::IterMut
• Weak’s type parameter may dangle on drop
• add TrustedRandomAccess specialization for Vec::extend()
• enable Vec’s calloc optimization for Option<NonZero>
• prevent double drop in Vec::dedup_by if a destructor panics
• fix pointer provenance in <[T]>::copy_within
• add String::extend_from_within
• add inline attr to CString::into_inner so it can optimize out NonNull checks
• hashbrown: guard against allocations exceeding isize::MAX
• futures: allow no limit for buffered stream combinators
• cargo: cargo tree -e no-proc-macro to hide procedural macro dependencies
• rustup: bring back x86_64-sun-solaris target to rustup
• clippy: add avoid_breaking_exported_api config option
• clippy: add lint suspicious_splitn
• clippy: move semicolon_if_nothing_returned to pedantic
• clippy: improve message for not_unsafe_ptr_arg_deref lint
• clippy: fix ICE in too_many_lines
• clippy: fix allow on some statement lints
• clippy: fix missing_docs_in_private_items false negative
• clippy: add the ability to invalidate caches to force metadata collection

Rust Compiler Performance Triage

忙碌的一周，由于性能下降，有几个 PR 回退，但总体上是积极的一周。

分流完成 @simulacrum. 修订范围：cdbe288..1160cf8

3 个退步，3 个改进，5 个混合

Full report here.

Approved RFCs

Rust 的变化遵循 RustRFC (request for comments) process.这些是本周批准实施的 RFC：

• RFC: 2021 Edition

Final Comment Period

每周the team宣布正在达成决定的 RFC 和关键 PR 的“最终评论期”。现在就发表你的意见。

RFCs

• [disposition: merge] RFC: Supertrait item shadowing
• [disposition: merge] Type-changing struct update syntax
• [disposition: merge] RFC: Introduce concat_bytes!() to join [u8] and byte str analogous to concat! for str
• [disposition: merge] RFC: Overconstraining and omitting unsafe in impls of unsafe trait methods

Tracking Issues & PRs

• [disposition: merge] Re-add support for parsing (and pretty-printing) inner-attributes in match body

New RFCs

• Switch from travis to github actions.

Quote of the Week

好的，你想要它。让我们来看看完整的元数据：

我最近获得了博士学位，在开发了 5 个不同版本的模拟器后，用 4 种不同的语言编写。最后一个版本是用纯粹的、安全的 rust 编写的，部分原因是因为 rust 对“安全”意义，有很强的保证，我能够利用它将通常的运行时错误，转化为编译时错误。这让我可以捕捉到通常需要数天或数周才能调试的错误，然后再进行相对简单的更正。[…] 所以，再次感谢大家！

– Cem Karan on rust-internals

Thanks to Josh Triplett 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