rust - How can I randomly select one element from a vector or array?

Question

I have a vector where the element is a (String, String). How can I randomly pick one of these elements?

question from:https://stackoverflow.com/questions/34215280/how-can-i-randomly-select-one-element-from-a-vector-or-array

Answer 1

You want the rand crate, specifically the choose method.

use rand::seq::SliceRandom; // 0.7.2

fn main() {
    let vs = vec![0, 1, 2, 3, 4];
    println!("{:?}", vs.choose(&mut rand::thread_rng()));
}