/// use std::collections::HashSet;
///
/// let xs = [1,2,3,4,5,6];
- /// let mut set: HashSet<isize> = xs.iter().cloned().collect();
+ /// let mut set: HashSet<i32> = xs.iter().cloned().collect();
/// set.retain(|&k| k % 2 == 0);
/// assert_eq!(set.len(), 3);
/// ```
#[test]
fn test_retain() {
let xs = [1, 2, 3, 4, 5, 6];
- let mut set: HashSet<isize> = xs.iter().cloned().collect();
+ let mut set: HashSet<i32> = xs.iter().cloned().collect();
set.retain(|&k| k % 2 == 0);
assert_eq!(set.len(), 3);
assert!(set.contains(&2));