Rust周报 401(译)

• this-week-in-rust
• 日期：2021-07-28
• 原文：401 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。

This Week in Rust 对你意味着什么 ?

This Week in Rust will be the focus of nellshamrell’s RustConf keynote in September. She would love if you would help inform the talk by sharing what This Week in Rust means to you on this Reddit post or in the Discourse forums. Thank you!

Updates from Rust Community

Official

• [Inside] 1.54.0 pre-release testing

Project/Tooling Updates

• rust-analyzer Changelog #87
• CGlue Today And The Road Ahead
• 黑帽 Rust: July Update
• Updates from the Tinyverse - July 2021
• Gloo v0.3.0 release
• This Week In TensorBase 13

Observations/Thoughts

• 一分钟内，百万插入 in SQLite
• Async and asleep: designing our future embedded applications
• 我的 Rust 开发流程 (2年 全职经验)
• Dealing with Out-of-memory Conditions in Rust
• Rust for Linux redux
• 用 Rust 对一个 interpreter 进行拆解的经验
• Rust: First Thoughts
• Mutable statics have scary superpowers! Do not use them
• 9 大优势 in Rust
• [audio] arewepodcastyet - 07 georg semmler on diesel!

Rust Walkthroughs

• Awesome Unstable Rust Features
• Svelte, Redis, and Rust，造一个跨平台桌面应用
• 深入了解 Rust futures
• Understanding Rust’s ‘serde’ using macro expansion
• Rust - Writing Parsers With nom Parser Combinator Framework
• ✨🥞 Rust Visualized: The Stack, the Heap, and Pointers
• First steps with Rust declarative macros!
• diceroller, a sample Rust project
• Ditching try..catch and null checks with Rust
• Implementing Merge Sort in Rust
• Emulating abstract base classes in Rust
• Rust #6: Exploring crates
• Rust and WebAssembly Serverless Functions in Vercel
• Raw Pointers in Unsafe Rust are quite powerful
• 28 Days of Rust – Part 1: Ownership and the Borrow Checker
• The Rust dbg! macro
• [video] building a web application with rust - part x - vanillajs frontend
• [video] rust bevy tutorial - enemy formation & attack (part 3/3)
• [video] how to create an aws lambda in rust

Research

• Performance vs Programming Effort between Rust and C on Multicore Architectures: Case Study in N-Body
• Revisiting Prechelt’s paper and follow-ups comparing Java, Lisp, C/C++ and scripting languages
• Programming Rules to Develop Secure Applications with Rust

Miscellaneous

• This finally happened: rust 更合理了
• Edward Snowden endorses Rust for more secure computing
• I bet I can do that in rust!!. Generic types are more powerful than most of us thought

Crate of the Week

本周的箱子是loadstone，用于嵌入式系统的裸机 bootloader。

谢谢Andres O. Vela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。

• What does This Week in Rust mean to you?
• rust-embedded/cross - Call for help: more maintainers wanted
• ChainSafe/forest has several help wanted issues
• getsynth/synth - Support postgres json and jsonb types
• getsynth/synth - Feature: Doc template generator
• ockam-network/ockam - Rust - UDP Transport
• ockam-networking/ockam - File Transfer over end-to-end encrypted secure channels

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.

Updates from Rust Core

287 个拉取请求是merged in the last week

• recognize bounds on impls as const bounds
• warn on inert attributes used on bang macro invocation
• better diagnostics with mismatched types due to implicit static lifetime
• improve SortedMap::get_by_key_enumerated more
• VecMap::get_value_matching should return just one element
• don’t create references to uninitialized data in List::from_arena
• miri: better errors for negative out-of-bounds offsets
• miri: better ptr-out-of-bounds errors
• MIR opt: separate constant predecessors of a switch
• stabilize into_parts() and into_error()
• stabilize impl From<[(K, V); N]> for HashMap (and friends)
• remove Option from BufWriter
• implement TrustedLen for Flatten/FlatMap if the U: IntoIterator == [T; N]
• add Stdin::lines, Stdin::split forwarder methods
• add support for custom allocator in VecDeque
• hashbrown: make rehashing and resizing less generic
• hashbrown: inline small functions
• clippy: add check if ty has_escaping_bound_vars in zero_sized_map_values lint
• clippy: improve conflicting rlibs error again

Rust Compiler Performance Triage

非常安静的一周，只有改进。有一种可能的退步，但由于几乎不影响一个有点嘈杂的压力测试基准，它被排除在考虑之外。未分类的拉取请求继续堆积，但仍然没有很好的处理流程。

分流完成 @rylev。修订范围：5c0ca08..998cfe5

0 退步，3 改进，0 混合；其中 0 个在汇总中

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：

• #[derive(Default)] on enums with a #[default] attribute
• RFC: Introduce concat_bytes!() to join [u8] and byte str analogous to concat! for str

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

• Stabilize Cargo’s weak-dep-features and namespaced-features.

Tracking Issues & PRs

• [disposition: merge] impl Default, Copy, Clone for std::io::Sink and Empty
• [disposition: merge] Allow reifying intrinsics to fn pointers.
• [disposition: merge] Associated functions that contain extern indicator or have #[rustc_std_internal_symbol] are reachable
• [disposition: merge] impl Pattern for char array
• [disposition: merge] Commit to not supporting IPv4-in-IPv6 addresses
• [disposition: merge] Implement Extend<(A, B)> for (Extend<A>, Extend<B>)

New RFCs

本周没有提出新的 RFC。

Quote of the Week

我们能够验证 Rust 类型系统的安全性，从而展示 Rust 如何自动可靠地防止编程错误

– Ralf Jung on Eureka Alert Science News

Thanks to Henrik Tougaard 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