Struct rand::read::ReadRng

pub struct ReadRng<R> {
    // some fields omitted
}

An RNG that reads random bytes straight from a Read. This will work best with an infinite reader, but this is not required.

Panics

It will panic if it there is insufficient data to fulfill a request.

Example

use rand::{read, Rng};

let data = vec![1, 2, 3, 4, 5, 6, 7, 8];
let mut rng = read::ReadRng::new(&data[..]);
println!("{:x}", rng.gen::<u32>());

Methods

impl<R: Read> ReadRng<R>

fn new(r: R) -> ReadRng<R>

Create a new ReadRng from a Read.

Trait Implementations

impl<R: Read> Rng for ReadRng<R>

fn next_u32(&mut self) -> u32

fn next_u64(&mut self) -> u64

fn fill_bytes(&mut self, v: &mut [u8])

fn next_f32(&mut self) -> f32

fn next_f64(&mut self) -> f64

fn gen<T: Rand>(&mut self) -> T where Self: Sized

fn gen_iter<'a, T: Rand>(&'a mut self) -> Generator<'a, T, Self> where Self: Sized

fn gen_range<T: PartialOrd + SampleRange>(&mut self, low: T, high: T) -> T where Self: Sized

fn gen_weighted_bool(&mut self, n: u32) -> bool where Self: Sized

fn gen_ascii_chars<'a>(&'a mut self) -> AsciiGenerator<'a, Self> where Self: Sized

fn choose<'a, T>(&mut self, values: &'a [T]) -> Option<&'a T> where Self: Sized

fn shuffle<T>(&mut self, values: &mut [T]) where Self: Sized