Function rand::seq::sample_slice_ref
source · pub fn sample_slice_ref<'a, R, T>(
rng: &mut R,
slice: &'a [T],
amount: usize
) -> Vec<&'a T>where
R: Rng,
Expand description
Randomly sample exactly amount
references from slice
.
The references are non-repeating and in random order.
This implementation uses O(amount)
time and memory.
Panics if amount > slice.len()
Example
use rand::{thread_rng, seq};
let mut rng = thread_rng();
let values = vec![5, 6, 1, 3, 4, 6, 7];
println!("{:?}", seq::sample_slice_ref(&mut rng, &values, 3));