pub struct ReadRng<R> { /* private fields */ }
Expand description
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>());
Implementations§
Trait Implementations§
source§impl<R> Rng for ReadRng<R>where
R: Read,
impl<R> Rng for ReadRng<R>where
R: Read,
source§fn fill_bytes(&mut self, v: &mut [u8])
fn fill_bytes(&mut self, v: &mut [u8])
Fill
dest
with random data. Read moresource§fn next_f32(&mut self) -> f32
fn next_f32(&mut self) -> f32
Return the next random f32 selected from the half-open
interval
[0, 1)
. Read moresource§fn next_f64(&mut self) -> f64
fn next_f64(&mut self) -> f64
Return the next random f64 selected from the half-open
interval
[0, 1)
. Read moresource§fn gen<T>(&mut self) -> Twhere
T: Rand,
Self: Sized,
fn gen<T>(&mut self) -> Twhere
T: Rand,
Self: Sized,
Return a random value of a
Rand
type. Read moresource§fn gen_iter<T, 'a>(&'a mut self) -> Generator<'a, T, Self> ⓘwhere
T: Rand,
Self: Sized,
fn gen_iter<T, 'a>(&'a mut self) -> Generator<'a, T, Self> ⓘwhere
T: Rand,
Self: Sized,
Return an iterator that will yield an infinite number of randomly
generated items. Read more
source§fn gen_range<T>(&mut self, low: T, high: T) -> Twhere
T: PartialOrd<T> + SampleRange,
Self: Sized,
fn gen_range<T>(&mut self, low: T, high: T) -> Twhere
T: PartialOrd<T> + SampleRange,
Self: Sized,
source§fn gen_weighted_bool(&mut self, n: u32) -> boolwhere
Self: Sized,
fn gen_weighted_bool(&mut self, n: u32) -> boolwhere
Self: Sized,
Return a bool with a 1 in n chance of true Read more
source§fn gen_ascii_chars<'a>(&'a mut self) -> AsciiGenerator<'a, Self> ⓘwhere
Self: Sized,
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
source§fn choose<T, 'a>(&mut self, values: &'a [T]) -> Option<&'a T>where
Self: Sized,
fn choose<T, 'a>(&mut self, values: &'a [T]) -> Option<&'a T>where
Self: Sized,
Return a random element from
values
. Read more