Function std::rand::sampleExperimental
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pub fn sample<T, I: Iterator<T>, R: Rng>(rng: &mut R, iter: I, amount: uint) -> Vec<T>
Randomly sample up to amount
elements from an iterator.
Example
fn main() { use std::rand::{thread_rng, sample}; let mut rng = thread_rng(); let sample = sample(&mut rng, range(1i, 100), 5); println!("{}", sample); }use std::rand::{thread_rng, sample}; let mut rng = thread_rng(); let sample = sample(&mut rng, range(1i, 100), 5); println!("{}", sample);