Get random enum rust

Your own enum

Like most abstractions in Rust, random value generation is powered by traits. Implementing a trait is the same for any particular type, the only difference is exactly what the methods and types of the trait are.
Rand 0.5, 0.6, 0.7, and 0.8

Implement Distribution using your enum as the type parameter. You also need to choose a specific type of distribution; Standard is a good default choice. Then use any of the methods to generate a value, such as rand::random:

use rand::{
    distributions::{Distribution, Standard},
    Rng,
}; // 0.8.0

#[derive(Debug)]
enum Spinner {
    One,
    Two,
    Three,
}

impl Distribution<Spinner> for Standard {
    fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Spinner {
        // match rng.gen_range(0, 3) { // rand 0.5, 0.6, 0.7
        match rng.gen_range(0..=2) { // rand 0.8
            0 => Spinner::One,
            1 => Spinner::Two,
            _ => Spinner::Three,
        }
    }
}

fn main() {
    let spinner: Spinner = rand::random();
    println!("{:?}", spinner);
}

Source: stackoverflow.com

Similar codes

1 vote174 views1 answer
Rust check if key in hashmap
Rust
1 vote138 views1 answer
Access command line arguments
Rust
0 vote122 views1 answer
Initializing array rust
Rust
1 vote142 views1 answer
Rust warning: unused doc comment
Rust
0 vote154 views1 answer
Rust random float between 0 and 1
Rust
0 vote124 views1 answer
Get last index of string rust
Rust
0 vote135 views1 answer
Rust array in striuct
Rust
0 vote144 views1 answer
Rust value of pi
Rust
1 vote136 views2 answers
Length of vector rust
Rust
0 vote137 views1 answer
Rust vec length
Rust