Rust周报 388(译)

• this-week-in-rust
• 日期：2021-04-28
• 原文：388 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

本周没有新闻通讯。

Official

• Announcing Rustup 1.24.0
• [Inside] congrats to compiler team member aaron hill
• [Foundation] introducing josh stone
• [Foundation] introducing lars bergstrom

Project/Tooling Updates

• rust-analyzer Changelog #74
• IntelliJ Rust Changelog #146
• Lemmy Release v0.11.0
• simdutf v0.1.1 - A small step for semver, one giant leap for performance
• The playable demo of Outer Wonders, our cute, colorful and Rust-powered 猜谜游戏, is live on itch.io for Windows and Linux! Thank you Rust community for creating such awesome tools!

Observations/Thoughts

• Rust Notebooks with Evcxr: 采访 David Lattimore
• iterators 的成本 和 零成本抽象 in Rust (with video)
• Move Constructors in Rust: Is it possible?
• basedrop: a garbage collector for 实时音频 in rust
• Road to TurboWish; Part 1: Goals
• Road to TurboWish; Part 2: Stories
• The Pains of Path Parsing
• If you could re-design Rust from scratch today, what would you change?
• Red & blue functions are actually a good thing

Rust Walkthroughs

• Creating 隐私保护签名 in Rust with BBS+
• Late Night Confessions — Building a Website Using Rust, Rocket, Diesel, and Askama - Part 2
• How to Build a Custom Test Harness in Rust
• Introduction to gRPC in Rust
• Writing a Postgres SQL Pretty Printer in Rust: Part 2
• [series] a journey into rust
• [ZH] [series] Build GraphQL services based on Async Rust using tide + async-graphql + mongodb (基于 Async Rust 构建 GraphQL 服务，使用 tide + async-graphql + mongodb) - Part 2
• [ZH] [series] Build GraphQL services based on Async Rust using actix-web + async-graphql + rbatis + postgresql / mysql (基于 actix-web + async-graphql + rbatis + postgresql / mysql 构建异步 Rust GraphQL 服务) - Part 1
• [video] what is rust and why is it important?
• [video] using iterator::collect in rust
• [video] rustconf 2020 - macros for a more productive rust by jam1garner

Papers/Research Projects

• A DSL embedded in Rust
• 各种编程语言的能量效率

Miscellaneous

• 采访 Linux 之父， Linus Torvalds: Linux and Git
• Programming languages: JavaScript has most developers but Rust is the fastest growing
• Parts of Tensorboard（提供机器学习实验所需的可视化功能和工具） are being rewritten in Rust for a 100x to 400x speedup
• Are we finally about to gain guaranteed Tail Calls in Rust?
• GitHub Actions best practices for Rust projects

Crate of the Week

这周的箱子是cargo-rr，这是一个 cargo 子命令，可在我们的代码上，使用时间旅行的 rr 调试器。

谢谢Willi Kappler提名

提交您下周的建议和投票！

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 Rust 社区中的一些任务，供您选择和开始！

其中一些任务也可能有导师，请访问任务页面以获取更多信息。

jsonschema-rs: User-defined validation for the format keyword

如果您是 Rust 项目的所有者并且正在寻找贡献者，请提交任务这里。

Updates from Rust Core

350 个拉取请求在上周合并

• use LLVM’s new saturating float-to-int intrinsics
• enable sanitizers for x86_64-unknown-linux-musl
• add coverage to continue statements
• further split up const_fn feature flag
• 各种各样的 const parameter defaults 改善
• 调整 trait not `use d suggestion
• on stable, suggest removing #![feature] for features that have been stabilized
• improve diagnostics for function passed when a type was expected
• add suggestion to “use break” when attempting to implicit-break a loop
• suggest .as_ref() on borrow error involving Option/Result
• implement a lint that highlights all moves larger than a configured limit
• introduce CompileMonoItem DepNode
• 谨慎地添加 IntoIterator for arrays by value
• stabilize Duration::MAX
• stabilize core::array::{from_ref, from_mut} in 1.53.0
• implement TrustedRandomAccess for Take iterator adapter
• format Struct { .. } on one line even with {:#?}
• added CharIndices::offset function
• improve rebuilding behaviour of BinaryHeap::retain
• hashbrown: add an allocator() getter to HashMap and HashSet
• libz: disable forced zlib vendoring on musl
• cargo: some changes to rustdoc fingerprint checking
• rustdoc: remove most fields from ExternalCrate
• clippy: refactor MSRV aliases
• clippy: finish MSRV for cloned_instead_of_copied
• clippy: manual_unwrap_or: fix invalid code suggestion due to macro expansion
• clippy: cloned_instead_of_copied MSRV
• clippy: add flat_map_option lint
• clippy: unused_io_amount detects .read().ok()?
• clippy: add lint to check for boolean comparison in assert macro calls

Rust Compiler Performance Triage

有一个星期没有任何退步和 2 个小改进总是很高兴 🎉🎉。

分流由 @rylev。修订范围：6df26f8..537544

0 退步，2 改进，0 混合

Approved RFCs

对 Rust 的更改跟随 RustRFC (request for comments) process。以下是本周批准实施的 RFC：

本周未批准任何 RFC。

Final Comment Period

每周the team宣布即将做出决定的 RFC 和主要 PR 的“最终意见征询期”。立即发表您的意见。

RFCs

• [disposition: merge] rfc: reserved prefixes in the 2021 edition
• [disposition: postpone] enum variant types

Tracking Issues & PRs

• [disposition: merge] add default search path to target::search()
• [disposition: merge] parser: remove support for inner attributes on non-block expressions
• [disposition: merge] 跟踪问题：{hashmap,btreemap}::into_{keys,values}

New RFCs

• Add bitfields support
• A new prelude for the 2021 edition (trait-only edition)

Quote of the Week

此错误消息是不真实的

– Ash 2X3 on Twitter

Thanks to Nixon Enraght-Moony 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