Struct std::random::Exponential

Exponential distribution over the positive real numbers.

This distribution is parameterized by a rate parameter lambda. The rate parameter is the inverse of the mean of the distribution.

Example

use std::random::{thread_rng, Exponential};

let dist: Exponential<f64> = Exponential::new(2.0);
// Prints a random number from an exponential distribution with rate 2
println!("{}", dist.sample(thread_rng()));
Run this example

Methods

• fn new(lambda: F) -> Exponential<F>

  source

  Create an exponential distribution with a given rate lambda.

• fn sample<R>(self: &Exponential<F>, rng: &mut R) -> F

  R: Rng<R>

  source

  Samples a distribution using a provided random number generator.

Mixins

• mixin<R> Distribution<Exponential<F>, F, R>

  R: Rng<R>

• fn sample_iter(self: &Self, rng: &mut R) -> DistIterator<Self, T, R>

  source

  Raturns an iterator producing an infinite stream of values sampled from the distribution.

  Example

  use std::random::{thread_rng, UniformInteger};
  
  let dist = UniformInteger::new(0..=5);
  
  // Prints 10 random numbers between 0 and 5 inclusive
  for i in dist.sample_iter(thread_rng()).take(10) {
      println!("{}", i);
  }
  Run this example