Function unique 

pub fn unique<T: Clone + Eq + Hash>(data: &[T]) -> Vec<T>

Returns a new Vec containing only unique elements (first occurrence).

Example

use d3rs::array::unique;

let data = vec![1, 2, 2, 3, 1, 4, 3];
assert_eq!(unique(&data), vec![1, 2, 3, 4]);