useyastl::Pool;fnmain(){let pool =Pool::new(4);letmut list =vec![1,2,3,4,5];
pool.scoped(|scope|{// since the `scope` guarantees that the threads are finished if it drops,
// we can safely borrow `list` inside here.
for x in list.iter_mut(){
scope.execute(move||{*x +=2;});}});assert_eq!(list,vec![3,4,5,6,7]);}