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 vote217 views1 answer
Rust the size for values of type `str` cannot be known at compilation time\nthe trait `Sized` is not implemented for `str`
Rust
0 vote173 views1 answer
Rust how to create array with the same value
Rust
1 vote108 views1 answer
Rust remove element from vector
Rust
0 vote171 views1 answer
Rust from floating point to money
Rust
2 votes259 views2 answers
Get length of vector rust
Rust
2 votes263 views2 answers
Rust comment
Rust
0 vote180 views1 answer
Packet sniffing with rust
Rust
1 vote186 views1 answer
Rust field is never read remove warning
Rust
1 vote186 views1 answer
How to split a string by spaces rust
Rust
0 vote166 views1 answer
Split text on multiple separators and put into a list
Rust