Crate features / half
Feature flags · half 2.7.1 · from crates.io 2026-10-24
half features: what each one does, and the line to copy
Short answerhalf 2.7.1 has 6 features. By default it turns on std; add default-features = false to start from nothing. It needs Rust 1.81 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
alloc | nothing else (a switch the code checks) | |
nightly | nothing else (a switch the code checks) | |
rand_distr | dep:rand, dep:rand_distr | |
std | yes | alloc |
use-intrinsics | nothing else (a switch the code checks) | |
zerocopy | nothing else (a switch the code checks) |
dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).
MSRV history
The minimum Rust version half declares (rust-version), and the release that changed it:
- 2.0.0 (2022-06-21): Rust 1.58
- 2.3.1 (2023-06-26): Rust 1.70
- 1.8.3 (2024-02-26): no rust-version declared
- 2.4.0 (2024-02-26): Rust 1.70
- 2.5.0 (2025-03-14): Rust 1.81
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p half --precise <version>, or use resolver 3, which picks compatible versions for you.
More on half
Real downloads, dependents and alternatives: half crate data (1.4M real downloads a day, 1,633 dependents).
docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2021
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