Seed and Prng

The type Seed allows you to determine the pseudorandomness. You can either use a fixed Seed or a random Seed:

#![allow(unused)]
fn main() {
use dicetest::Seed;

println!("{:?}", Seed(42));
// Output: Seed(42)

println!("{:?}", Seed::random());
// Output: Seed(8019292413750407764)
}

The Seed can be used to initialize the pseudorandom number generator Prng. For each Seed, the Prng provides a different infinite pseudorandom sequence of u64s.

#![allow(unused)]
fn main() {
use dicetest::{Prng, Seed};

fn print_random_values(mut prng: Prng) {
    for _ in 0..3 {
        print!("{:?}, ", prng.next_number());
    }
    println!("...");
}

print_random_values(Prng::from_seed(Seed(42)));
// Output: 16628028624323922065, 3476588890713931039, 59688652182557721, ...
print_random_values(Prng::from_seed(Seed(42)));
// Output: 16628028624323922065, 3476588890713931039, 59688652182557721, ...
print_random_values(Prng::from_seed(Seed::random()));
// Output: 4221507577048064061, 15374206214556255352, 4977687432463843847, ...
print_random_values(Prng::from_seed(Seed::random()));
// Output: 11086225885938422405, 9312304973013875005, 1036200222843160301, ...
}