commit | fbb7e3157c294d6cca1c6ff0ad042afef23723d7 | [log] [tgz] |
---|---|---|
author | Alex Crichton <alex@alexcrichton.com> | Fri Dec 02 09:27:26 2016 -0800 |
committer | GitHub <noreply@github.com> | Fri Dec 02 09:27:26 2016 -0800 |
tree | 5a9d4c0afc813bf82661d9b9f08be82812964e2f | |
parent | f2267c1d03b22349d7dedc1d823ebd115f820341 [diff] | |
parent | 11b473034693052d6897ec5fcc5fcfdaa1b25f8b [diff] |
Merge pull request #129 from malbarbo/improve-gen-range Add inline attribute to SampleRange::construct_range
A Rust library for random number generators and other randomness functionality.
Add this to your Cargo.toml
:
[dependencies] rand = "0.3"
and this to your crate root:
extern crate rand;
There is built-in support for a random number generator (RNG) associated with each thread stored in thread-local storage. This RNG can be accessed via thread_rng, or used implicitly via random. This RNG is normally randomly seeded from an operating-system source of randomness, e.g. /dev/urandom on Unix systems, and will automatically reseed itself from this source after generating 32 KiB of random data.
let tuple = rand::random::<(f64, char)>(); println!("{:?}", tuple)
use rand::Rng; let mut rng = rand::thread_rng(); if rng.gen() { // random bool println!("i32: {}, u32: {}", rng.gen::<i32>(), rng.gen::<u32>()) }
It is also possible to use other RNG types, which have a similar interface. The following uses the “ChaCha” algorithm instead of the default.
use rand::{Rng, ChaChaRng}; let mut rng = rand::ChaChaRng::new_unseeded(); println!("i32: {}, u32: {}", rng.gen::<i32>(), rng.gen::<u32>())