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

0 vote231 views1 answer
Rust Options Some None using closures
Rust
0 vote235 views1 answer
Rust value of pi
Rust
0 vote241 views1 answer
Rust sort vec of f64
Rust
0 vote230 views1 answer
Rust create hashmap from delimited data in string
Rust
0 vote240 views1 answer
Rust cargo.toml dependencies
Rust
0 vote227 views2 answers
Greatest common divisor iterative
Rust
0 vote237 views1 answer
Rustlang how to compile
Rust
1 vote222 views1 answer
Access command line arguments
Rust
0 vote236 views1 answer
Execution duration
Rust
2 votes339 views3 answers
Rust comment types
Rust