Rust周报 373(译)

• this-week-in-rust
• 日期：2021-01-13
• 原文：373 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

Official

Newsletters

• This Month in Rust GameDev #17 - December 2020
• This Month in Rust OSDev (December 2020)

Project/Tooling Updates

• rust-analyzer Changelog #59
• Knurling-rs Changelog #12
• GCC Rust – How it can be achieved
• Open Source Security, Inc. Announces Funding of GCC Front-End for Rust
• Progress report on rustc_codegen_cranelift (Dec 2020)

Observations/Thoughts

• XML parsing in Rust
• 8 倍速，parsing baseball files in Rust instead of Python!
• Rust and Haskell 哲学
• Maybe you don’t need Rust and WASM to speed up your JS
• 简化 字节序文件的解析器 in Rust with Omnom and type inference
• Rust’s SemVer Snares: repr(transparent) Super-Cut
• 混用的价值
• [音频] the virtual world: embedded rust part 2 - james munns

Rust Walkthroughs

• Setting a Rust Executable’s Icon in Windows
• The Little Book of Rust Books
• Rust Design Patterns
• Hecto: Build your own text editor in Rust
• CLI Shell 补全命令 in Rust
• 动态的 Aligned Types?
• 打磨 Rust - Temporary Value Dropped While Borrowed
• 测试硬件 Using Rust Firmware and Rust Based CLI
• Exposing a Rust Library to Other Languages
• Replacing FastAPI with Rust: Part 3 - Trying Actix
• [video] learning rust by following the “too many linked lists” tutorial (episode 1)
• [video] rust parser and state machine

Miscellaneous

• Rust Language Cheat Sheet
• Another Rust-y OS: Theseus joins Redox in pursuit of safer, more resilient systems
• [video] osdi ‘20 - redleaf: isolation and communication in a safe operating system
• [video] read a paper: theseus–an os written in rust

Crate of the Week

这周的箱子是fast-float，提供提供解析 floats 的方法，非常快速。

谢谢Willi Kappler的建议！

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。

• ZcashFoundation/zebra - Create test to catch duplicate dependencies

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

共有 320 个拉取请求在上周合并

• use correct span for structured suggestion
• rustc_parse: better spans for synthesized？ token streams
• ast: 移除 values 上的一些"覆盖层" in key-value attributes
• resolve: scope visiting doesn’t need an Ident
• resolve/expand: improve attribute expansion on macro definitions and calls
• 优化 DST field access
• 允许 references to 位于一个 feature gate 之后的 interior mutable data
• fixed const_generics error help
• use an empty TokenCursorFrame stack when capturing tokens
• 重复数据删除 Solution enum in chalk-recursive
• 优化 some fs::metadata calls
• 优化 some path lookups in the generic fs::copy implementation
• implement From<char> for u64 and u128
• 稳定化： slice::strip_prefix and slice::strip_suffix
• add [T; N]::each_ref and [T; N]::each_mut
• futures: perf: avoid an Option in the Map* futures
• backtrace: 如果 DWARF 仅有 line numbers，使用 symbol table
• cargo: 稳定化： -Zfeatures and -Zpackage-features
• rustdoc: 修复 macros 2.0 和内置 derives 在 wrong path 显示
• docs.rs: 修复 N+1 queries when fetching crate details
• docs.rs: 修复 performance regression in all releases-views
• clippy: new lint: vec_init_then_push

Rust Compiler Performance Triage

• 2020-01-12: 1 个退步, 2 个进步, 3 个 Mixed 总体来说, 有意义尽管安静的一周。增量编译工作组的这些 changes 带来的性能优化，具体关于 debug 模式下，inlining 是怎样控制的。不幸的是, 出于担忧，changes 可能会被 reversed。

分类由 @rylev 完成。

见full report更多。

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：

• RFC: Serve crates-io registry over HTTP as static files，可选择性下载
• Infallible promotion
• RFC: Add target_abi configuration
• RFC: Plan to make core and std’s panic identical

Final Comment Period

每周the team宣布即将做出决定的 RFC 和主要 PR 的“最终评论期”。立即发表您的意见。

RFCs

• Allow “artifact dependencies” on bin, cdylib, and staticlib crates
• RFC: Pointer metadata & VTable

Tracking Issues & PRs

• [disposition: 合并] 跟踪问题：panic_any
• 跟踪问题：stable SIMD in Rust

New RFCs

• Add the boxed!() macro to “de-magic” box syntax
• try_trait_v2: A new design for the ? desugaring
• Add language support for C-compatible bit-fields

Quote of the Week

Rust 优先考虑安全性而不是便利性。Rust 不希望您犯一些愚蠢的小错误，以至于浪费大量的调试时间，这最终使它更加便利。

– @Joe232 on rust-users

Thanks to Jacob Pratt 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