// The prelude import enables methods we use below, specifically// Rng::random, Rng::sample, SliceRandom::shuffle and IndexedRandom::choose.userand::prelude::*;// Get an RNG:letmutrng = rand::rng();// Try printing a random unicode code point (probably a bad idea)!println!("char: '{}'", rng.random::<char>());// Try printing a random alphanumeric value instead!println!("alpha: '{}'", rng.sample(rand::distr::Alphanumeric)aschar);// Generate and shuffle a sequence:letmutnums: Vec<i32> = (1..100).collect();nums.shuffle(&mutrng);// And take a random pick (yes, we didn't need to shuffle first!):let _= nums.choose(&mutrng);

Modules§

distr

Generating random samples from probability distributions

prelude

Convenience re-export of common members

rngs

Random number generators and adapters

seq

Sequence-related functionality

Traits§

CryptoRng

A marker trait used to indicate that anRngCore implementation issupposed to be cryptographically secure.

Fill

Types which may be filled with random data

Rng

User-level interface for RNGs

RngCore

Implementation-level interface for RNGs

SeedableRng

A random number generator that can be explicitly seeded.

TryCryptoRng

A marker trait used to indicate that aTryRngCore implementation issupposed to be cryptographically secure.

TryRngCore

A potentially fallible variant ofRngCore

Functions§

fillthread_rng

Fill any type implementingFill with random data

randomthread_rng

Generate a random value using the thread-local random number generator.

random_boolthread_rng

Return a bool with a probabilityp of being true.

random_iterthread_rng

Return an iterator overrandom() variates

random_rangethread_rng

Generate a random value in the given range using the thread-local random number generator.

random_ratiothread_rng

Return a bool with a probability ofnumerator/denominator of beingtrue.

rngthread_rng

Access a fast, pre-initialized generator

thread_rngDeprecatedthread_rng

Access the thread-local generator