Rust周报 405(译)

• this-week-in-rust
• 日期：2021-08-25
• 原文：405 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

Project/Tooling Updates

• rust-analyzer Changelog #91
• Apache Arrow Datafusion 5.0.0 release with major new features and performance improvements
• Apache Arrow Ballista 0.5.0 release
• This week in Fluvio #3: the programmable streaming platform
• SixtyFPS 0.1 Release和SixtyFPS Weekly Report
• nailgun: DNS 性能测试客户端
• nom 7.0 release: fast parser combinators, now without macros! And the new nom-bufreader
• Announcing egui 0.14
• miette: 为 apps and libraries，准备的 fancy new diagnostics definition and reporting crate !
• Rudra: Rust Memory Safety & Undefined Behavior Detection
• SnakeOS v0.1.0 released!
• Pueue v1.0.0 - Manage your shell commands. 在 3.5 年之后，迎来稳定版本
• Announcing Persy 1.0: a simple transactional storage
• This week in Datafuse #4

Observations/Thoughts

• Overview of the Rust 加密生态
• Superpowers of Unsafe Rust
• Using KLEE on Rust-for-Linux (part 1)
• Large Rust Workspaces
• Using Rust with Elixir 代码复用与性能
• Models of Generics and Metaprogramming: Go, Rust, Swift, D and More
• Shaking Off the Rust 2: Ray Tracing in WebAssembly
• Async Overloading
• Scoped Arena Allocator
• Concurrency in Rust is indeed fearless

Rust Walkthroughs

• Rust vectors
• Daily Rust: Iterators
• Getting Started with Systems Programming with Rust (Part 1)
• Getting Started with Systems Programming with Rust (Part 2)
• Optimizing Immutable Strings in Rust
• Rust for Data Science: Tutorial 1
• Rust and WebAssembly Serverless functions in Vercel
• Pin, Unpin, and why Rust needs them
• Rust: How to Unwrap Multiple Required Options
• Hexagonal architecture in Rust #1
• Hexagonal architecture in Rust #2
• Daily Rust: Iterators
• Cross compiling Windows binaries from Linux
• Rust Trait Objects Demystified
• End-to-End Encryption through Kafka, with Rust
• [ZH] 使用 Rust 进行形式化概念分析，Part1,Part2,Part3
• [video] building a small finite state machine in rust
• [video] rust community stuttgart - “traits and trait objects - more than just interfaces”

Miscellaneous

• 详尽列表：all Rust resources regarding automated or semi-automated formalization efforts in any area, constructive mathematics, formal algorithms, and program verification.
• 聚合 streaming data in real-time with WebAssembly
• I re-implemented the legendary “Typing the technical interview” article using only Rust types!
• Chromium adds a Rust toolchain as a potential dependency
• New very promising Linux syscall for creating secret memory even the kernel can’t read. I’ll be working for creating a crate for using it out
• [picture] field init shorthand in rust

Crate of the Week

本周的箱子是kube-leader-election，一个用于为 Kubernetes 工作负载，实现‘领导者选举’的箱子。

谢谢hendrikmaus自荐。

Please 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。

• rust-lang/cargo - “error: binary xxx already exists in destination” should print the full destination path
• ockam-network/ockam - Like ngrok, but using Ockam
• ockam-network/ockam - Forwarder in Rust
• andreev-io/little-raft - New Contributors Wanted

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

293 个拉取请求是merged in the last week

• upgrade to LLVM 13
• introduce hir::ExprKind::Let - Take 2
• enable compiler consumers to obtain mir::Body with Polonius facts
• force warn improvements
• account for tabs when highlighting multiline code suggestions
• use more accurate spans when proposing adding lifetime to item
• add notes to macro-not-found diagnostics to point out how things with the same name were not a match
• improve wording of the drop_bounds lint
• improve NLL’s “higher-ranked subtype error"s
• suggest importing the right kind of macro
• improve error reporting for closure return type mismatches
• canonicalize consts before calling try_unify_abstract_consts query
• reenable RemoveZsts
• I/O safety(RFC)#3128)
• stabilize arbitrary_enum_discriminant
• constified implementations of Default
• optimize unnecessary check in VecDeque::retain
• where available use AtomicU{64, 128} instead of mutex for Instant backsliding protection
• add fast path for Path::cmp that skips over long shared prefixes
• cargo: fix panic with build-std of a proc-macro
• clippy: add new lints negative_feature_names and redundant_feature_names
• clippy: move branches_sharing_code to nursery
• clippy: remove stderr limit

Rust Compiler Performance Triage

本周有一些退步，但主要是改进，主要是由于升级到 LLVM 13。

分流完成 @simulacrum.修订范围：aa8f27b..33fdb79

2 个退步，1 个改进，2 个混合；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：

本周没有 RFC 获得批准。

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

• RFC: let-expression

Tracking Issues & PRs

• [disposition: merge] Stabilize std::os::unix::fs::chroot
• [disposition: merge] Stabilize reserved prefixes
• [disposition: merge] stabilize disjoint capture in closures (RFC 2229)
• [disposition: merge] BTree: remove Ord bound from new
• [disposition: merge] Update Windows Argument Parsing
• [disposition: merge] Support #[track_caller] on closures and generators
• [disposition: merge] Stabilize “force warn” option
• [disposition: merge] Extend -Cdebuginfo with new options and named aliases
• [disposition: merge] Allow writing of incomplete UTF-8 sequences to the Windows console via stdout/stderr
• [disposition: merge] Tracking Issue for Iterator::intersperse
• [disposition: merge] Provide an API to extract fields from Command builder

New RFCs

• RFC: cargo-run-deps
• Proposal: Else clauses for for and while loops

Quote of the Week

代码在处理资源之前，就不要处理资源。这样才是流畅的数据流，同样的：您不关心线程管理，直到您想这样做，您不关心操作日志，直到您这样做，您不关心性能。。。从另一方面来说，代码不需要是异常安全的，直到它要。这种“神奇”语言特性的问题在于，正确性变得不可组合（‘1’ + ’1‘ 不一定等于 ‘2’）：您可以将两段工作代码放在一起，但得到的，可能是一些不起作用的东西。

– Mickey Donaghy on Hacker News

Thanks to Stephan Sokolow 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