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

2 votes263 views2 answers
Get length of vector rust
Rust
0 vote175 views1 answer
Sort a vector rust
Rust
0 vote160 views1 answer
Rust program name
Rust
0 vote173 views1 answer
Rust what does the double colon mean?
Rust
0 vote169 views2 answers
Reverse a string with runes
Rust
0 vote177 views1 answer
Rust array in striuct
Rust
0 vote173 views1 answer
Rust convert binary data into ASCII text using Base64 RFC 4648.
Rust
0 vote176 views1 answer
Convert i32 to usize rust
Rust
1 vote188 views1 answer
How to split a string by spaces rust
Rust
1 vote229 views1 answer
Append to file rust
Rust