Struct rand::read::ReadRng
[−]
[src]
pub struct ReadRng<R> { /* 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>());Run
Methods
impl<R: Read> ReadRng<R>
[src]
Trait Implementations
impl<R: Read> Rng for ReadRng<R>
[src]
fn next_u32(&mut self) -> u32
Return the next random u32. Read more
fn next_u64(&mut self) -> u64
Return the next random u64. Read more
fn fill_bytes(&mut self, v: &mut [u8])
Fill dest
with random data. Read more
fn next_f32(&mut self) -> f32
Return the next random f32 selected from the half-open interval [0, 1)
. Read more
fn next_f64(&mut self) -> f64
Return the next random f64 selected from the half-open interval [0, 1)
. Read more
fn gen<T: Rand>(&mut self) -> T where Self: Sized
Return a random value of a Rand
type. Read more
fn gen_iter<'a, T: Rand>(&'a mut self) -> Generator<'a, T, Self> where Self: Sized
Return an iterator that will yield an infinite number of randomly generated items. Read more
fn gen_range<T: PartialOrd + SampleRange>(&mut self, low: T, high: T) -> T where Self: Sized
Generate a random value in the range [low
, high
). Read more
fn gen_weighted_bool(&mut self, n: u32) -> bool where Self: Sized
Return a bool with a 1 in n chance of true Read more
fn gen_ascii_chars<'a>(&'a mut self) -> AsciiGenerator<'a, Self> where Self: Sized
Return an iterator of random characters from the set A-Z,a-z,0-9. Read more
fn choose<'a, T>(&mut self, values: &'a [T]) -> Option<&'a T> where Self: Sized
Return a random element from values
. Read more
fn shuffle<T>(&mut self, values: &mut [T]) where Self: Sized
Shuffle a mutable slice in place. Read more