Rust周报 386(译)

• this-week-in-rust
• 日期：2021-04-14
• 原文：386 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

本周没有论文/研究项目。

Official

• Brainstorming Async Rust’s Shiny Future
• [Foundation] introducing florian gilcher
• [Foundation] introducing peixin hou

Newsletters

• This Month in Rust GameDev #20 - March 2021

Project/Tooling Updates

• Progress report on rustc_codegen_cranelift (April 2021)
• IntelliJ Rust: Updates for 2021.1
• IntelliJ Rust Changelog #145
• rust-analyzer Changelog #72
• Ballista has been donated to the Apache Arrow project

Observations/Thoughts

• Rust in Production: MeiliSearch
• Rust 是给专业人士的
• Rust 是 async 型语言 ？是，还是不是
• Using Rust for 科学型计算应用: Learning from Past Experiences
• PlaintDB Servers - another milestone reached
• Why Rust for Robots?
• Integrating const-generics to nalgebra 0.26
• [podcast] building with rust: tim mcnamara on rust in action [transcript]

Rust Walkthroughs

• 构建 端对端 加密信息应用, with the Ockam crate, in this step by step guide.
• Introducing easy-cast
• Why Rust strings seem hard
• Rust shenanigans: 返回类型的多态性
• Writing Neovim plugins in Rust
• 一个 零成本 linked list in Rust
• Integrating Rust into Python
• Setting Up a gRPC Protobuf Server With Tonic
• Getting started with Kafka and Rust: Part 2
• Rust lib error management, multiple enum approach
• Asynchronous streams in Rust (part 2) - Cancelling expired requests
• [series] engaging warp: rest api with 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 1
• [video] flocking boids in rust: with piston vs tetra vs amethyst vs bevy

Miscellaneous

• Rust, not Firefox, 才是 Mozilla’s greatest industry contribution
• AWS’s Shane Miller to head the newly created Rust Foundation
• [RFC] Rust support for Linux kernel
• A look at LLVM - comparing clamp implementations
• Tokio-uring 设计协议
• Google is now writing low-level Android code in Rust
• Rust in the Linux kernel

Crate of the Week

这周的箱子是dipa，用于导出 Rust 数据结构的增量编码的箱子（对同结构数据下的不同值，做出差异化描述，减少数据量）。

尽管缺少提议，llogiq 对他的选择感到非常满意。

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。

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 329 个拉取请求在上周合并

• allow specifying alignment for functions
• 修复 handling of --output-format json flag
• 不要告诉用户 to use a nightly flag on the stable channel
• 改善 trait/impl method 差异错误
• 交代 ExprKind::Block when suggesting .into() and deref
• let #[allow(unstable_name_collisions)] work for things other than function
• add bad_asm_style to HardwiredLints
• 改善 debuginfo for closures and async functions on Windows MSVC
• use AnonConst for asm! constants
• add FromIterator and IntoIterator impls for ThinVec
• add strong_count mutation methods to Rc
• use a SmallVec in impl_or_trait_item
• use FromStr trait for number option parsing
• 减少由 ui-tests 产生的线程
• core: disable ptr::swap_nonoverlapping_one’s block optimization on SPIR-V
• 稳定化： cmp_min_max_by
• 稳定化： peekable_peek_mut
• 稳定化： duration_saturating_ops
• 稳定化： atomic_fetch_update methods on AtomicBool and AtomicPtr
• fix HashMap/HashSet LLDB pretty-printer after hashbrown
• futures: move try_fold, try_for_each, and try_for_each_concurrent to StreamExt
• futures: add stream::Peekable::{next_if, next_if_eq}
• fix perf regression in rustdoc::bare_urls
• rustdoc: cleanup handling of associated items for intra-doc links
• rustdoc: sort search index items for compression
• rustdoc: store intra-doc links in Cache instead of on items directly
• rustdoc: use ThinVec in a few places
• rustdoc: merge idents when generating source content
• clippy: fix false positive in single_component_path_imports lint
• clippy: fix explicit_into_iter_loop
• clippy: consider mutability on useless_vec suggestions
• clippy: fix missing_panics_doc not detecting assert_eq! and assert_ne!

Rust Compiler Performance Triage

整个星期都很安静。

整理由 @simulacrum 完成。修订范围：d322385..5258a74

1 个退步，0 个改进，0 个混合

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：

• RFC: -C export-executable-symbols

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: 保留前缀 prefixes in the 2021 edition
• [disposition: merge] try_trait_v2: A new design for the ? desugaring
• [disposition: merge] add const-ub RFC
• [disposition: merge] Target tier policy
• [disposition: postpone] RFC: Custom DSTs

Tracking Issues & PRs

• [disposition: merge] Cautiously add IntoIterator for arrays by value
• [disposition: merge] Stabilize Duration::MAX
• [disposition: merge] Stabilize impl From<[(K, V); N]> for HashMap
• [disposition: merge] Allow setting target_family to multiple values, and implement target_family="wasm"
• [disposition: merge] Stabilize pat2015 but leave :pat2021 gated
• [disposition: merge] Update BARE_TRAIT_OBJECT and ELLIPSIS_INCLUSIVE_RANGE_PATTERNS to errors in Rust 2021
• [disposition: merge] Tracking Issue for ‘ordering helpers’
• [disposition: merge] Tracking issue for array::from_ref and array::from_mut
• [disposition: merge] Tracking issue for x86 bittest intrinsics
• [disposition: merge] Tracking issue for RFC 2457, “Allow non-ASCII identifiers”

New RFCs

• #[derive(Default)] on enums with a #[default] attribute #3107
• 添加 :value macro 捕获指示符

Quote of the Week

我每天实际看到的[rust] 是，我可以调用那些其他人编写的代码，且不会感到意外。

async fn verify_signature(token: &Jwt) -> Result<Claims, VerificationError>

查看上面的代码段：

• 我知道我的 JWT token 不可变, just accessed ( & );
• 我知道该函数将会执行一些 I/O ( async ) 的事情;
• 我知道该函数可能会失败 ( Result );
• 我知道它的失败结果 ( VerificationError ).

– Luca Palmieri 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