rust-knowledge-patch

📁 nevaberry/nevaberry-plugins 📅 Feb 7, 2026

总安装量

周安装量

#35172

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安装命令

npx skills add https://github.com/nevaberry/nevaberry-plugins --skill rust-knowledge-patch

Agent 安装分布

opencode 7

claude-code 7

gemini-cli 6

github-copilot 6

codex 6

kimi-cli 6

Skill 文档

Rust 1.85-1.93 Knowledge Patch

Claude’s baseline knowledge covers Rust through 1.84. This skill provides features from 1.85 (Feb 2025) through 1.93 (Jan 2026).

Quick Reference

Edition 2024 (Major Changes)

Change	Migration
`unsafe extern "C" {}`	Add `unsafe` to extern blocks
`#[unsafe(no_mangle)]`	Wrap unsafe attrs in `unsafe()`
`unsafe {}` in unsafe fns	Explicit unsafe blocks required
`static mut` denied	Use atomics/sync primitives
`gen` reserved	Rename identifiers
`set_var`/`remove_var` unsafe	Wrap in `unsafe {}`

Let chains (Edition 2024 only):

if let Some(x) = opt && x > 0 && let Some(y) = other { ... }

See references/edition-2024.md for full migration guide.

Async

Async closures: async || {} with AsyncFn, AsyncFnMut, AsyncFnOnce traits
OnceLock::wait: Block until initialization completes
RwLockWriteGuard::downgrade: Write â read lock without releasing

See references/async-and-concurrency.md.

Collections

Method	Types
`extract_if`	Vec, LinkedList, HashMap, HashSet, BTreeMap, BTreeSet
`pop_if`	Vec
`pop_front_if` / `pop_back_if`	VecDeque
`get_disjoint_mut`	slices, HashMap
`Cell::update`	Cell

Tuple collection: (Vec<_>, Vec<_>) = iter.map(\|x\| (a, b)).collect()

See references/collections.md.

Integers

Method	Description
`midpoint`	Exact midpoint without overflow
`is_multiple_of`	Divisibility check
`unbounded_shl/shr`	Return 0 on overflow
`cast_signed/unsigned`	Bit reinterpretation
`*_sub_signed`	Subtract signed from unsigned
`strict_*`	Panic on overflow (release too)
`carrying_/borrowing_`	Extended precision arithmetic
`unchecked_*`	UB on overflow (perf-critical)

See references/integers-and-arithmetic.md.

Slices & Arrays

Chunking: as_chunks, as_rchunks â (&[[T; N]], &[T])
Conversion: slice.as_array::<N>() â Option<&[T; N]>
Boundaries: str.ceil_char_boundary(n), floor_char_boundary(n)
Const: reverse, rotate_left, rotate_right

See references/slices-and-arrays.md.

Strings & Paths

Path::file_prefix: Filename without ANY extensions
PathBuf::add_extension: Add without replacing
OsStr::display: Lossy UTF-8 display
String::into_raw_parts: Decompose to (ptr, len, cap)

See references/strings-and-paths.md.

Pointers & Memory

Trait upcasting: &dyn Derived â &dyn Base automatic
NonNull provenance: from_ref, without_provenance, expose_provenance
MaybeUninit slices: write_copy_of_slice, assume_init_ref
Zeroed constructors: Box::new_zeroed(), Arc::new_zeroed()

See references/pointers-and-memory.md.

Assembly & SIMD

Safe #[target_feature]: No unsafe needed for decorated fns
asm! labels: Jump to Rust code blocks
asm! cfg: #[cfg(...)] on individual lines
Naked functions: #[unsafe(naked)] + naked_asm!

See references/assembly-and-simd.md.

I/O

io::pipe(): Cross-platform anonymous pipes
File::lock/unlock: Advisory file locking
i128/u128 in FFI: No more warnings

See references/io-and-process.md.

Misc

Result::flatten: Result<Result<T,E>,E> â Result<T,E>
fmt::from_fn: Display from closure
Duration::from_mins/hours: Convenience constructors
Const TypeId::of: Compile-time type IDs
Const float rounding: floor, ceil, round in const

See references/misc-apis.md.

Cargo

LLD default (x86_64 Linux): Faster linking
cargo publish --workspace: Multi-crate publishing
Auto cache cleaning: 3mo network, 1mo local

See references/cargo-and-tooling.md.

Reference Files

Detailed documentation in references/:

File	Contents
`edition-2024.md`	Full Edition 2024 migration guide
`async-and-concurrency.md`	Async closures, locks, atomics
`integers-and-arithmetic.md`	All integer methods
`collections.md`	extract_if, pop_if, disjoint_mut
`slices-and-arrays.md`	Chunking, conversion, const ops
`strings-and-paths.md`	Path/String APIs
`pointers-and-memory.md`	Upcasting, provenance, MaybeUninit
`assembly-and-simd.md`	asm!, target_feature, naked fns
`io-and-process.md`	Pipes, FFI, file locking
`misc-apis.md`	Floats, Duration, formatting, cfg
`cargo-and-tooling.md`	LLD, workspace publish, cache

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