getrandom
A small cross-platform library for retrieving random data from (operating) system source (by rust-random)
rand
Fast, high quality alternative to math/rand and golang.org/x/exp/rand (by flyingmutant)
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| getrandom | rand | |
|---|---|---|
| 8 | 3 | |
| 254 | 233 | |
| 2.0% | - | |
| 7.0 | 2.0 | |
| 12 days ago | 9 months ago | |
| Rust | Go | |
| Apache License 2.0 | Mozilla Public License 2.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
getrandom
Posts with mentions or reviews of getrandom.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-03-11.
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We have getrandom at home
The crypto source in Go is great, no complaints there. Lints like gosec even recommend using it when generating crypto entropy. Go did a good job here, and I expect Rust will do the same sometime after getrandom reaches 1.0 so the API questions are settled, plus whatever makes sense for the future-proofing the standard library needs.
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Fellow Rust enthusiasts: What "sucks" about Rust?
I would wait for the getrandom crate to reach 1.0, which will answer many of the questions around what an API like this can look like, and then maybe the standard library discussion will be on firmer footing because at least we'll know what API we want to immortalize. Rushing that now just to save people importing a small crate does not seem to be the way to go.
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Introduction to Random Number Generation in Rust
I'd caution against using /dev/random directly, and instead recommend using getrandom. It's effectively the same thing on Haiku and Redox, but is cross-platform and will upgrade to better sources on various platforms as available (such as using the getrandom() call on Linux and Android, or getentropy() on macOs, if avaialable).
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Alea: fast and easy random number generation in Rust
getrandom
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Why I rewrote my Rust keyboard firmware in Zig: consistency, mastery, and fun
It's a default, but overwritable behavior, see the #[path] attribute. You still have to create N files for each supported platform, but at the top level you will see only one module. On of the crates which uses this approach in practice is getrandom.
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String, Vec<T>, Box<T>, Rc<T>... could be moved from alloc to core
IIUC the main problem which prevents from moving HashMap & co to alloc is lack of API to get system entropy which is required for DOS protection. Ideally we would have a #[global_allocator]-like functionality for retrieving system entropy. Relevant issue: https://github.com/rust-random/getrandom/issues/21
rand
Posts with mentions or reviews of rand.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-03-11.
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We have getrandom at home
This may very well be a bit offtopic in the rust subreddit, but in case you need fast high quality non-crypto PRNG in Go, I've made one that I believe to be decent. It is unfortunate that math/rand is unlikely to significantly improve due to the backward compatibity and can't be recommended for anything non-trivial.
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Alternative to math/rand and golang.org/x/exp/rand
I got a bit stuck trying to find a set of good permutation functions for all required bit widths; I've created an issue to collect information in one place.
What are some alternatives?
When comparing getrandom and rand you can also consider the following projects:
nanorand-rs - A tiny, fast, zero-dep library for random number generation
youtube-stalker-bot - A telegram bot that sends you a random video
pollster - A minimal async executor that lets you block on a future
rust-delegate - Rust method delegation with less boilerplate
gosec - Go security checker
dislike-in-rust - A list of the few things I don't like about rust
rand - A Rust library for random number generation.
rust-orphan-rules - An unofficial, experimental place for documenting and gathering feedback on the design problems around Rust's orphan rules
SHLL - An experiment of high level code optimization
cargo-xtask
crates.io - The Rust package registry
nextest - A next-generation test runner for Rust.