commit | f3a5959ab2cd6bfbe1f5fe7f74e30c6dd211d098 | [log] [tgz] |
---|---|---|
author | Jeremiah Peschka <jeremiah.peschka@gmail.com> | Fri Jun 24 16:30:34 2016 -0700 |
committer | Jeremiah Peschka <jeremiah.peschka@gmail.com> | Fri Jun 24 16:30:34 2016 -0700 |
tree | b0522496d09864d2602e8ab4cd39155992db6775 | |
parent | 9f35b8e439eeedd60b9414c58f389bdc6a3284f9 [diff] |
Adding examples to ChaChaRng * Adds an example for creating an unseeded `ChaChaRng`. * Adds an example for using `set_counter`.
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>())