gistfile1.txt

use core::hashmap::linear::LinearSet;

struct Foo {
  n: LinearSet<int>,
}

impl Foo {
  fn foo(&mut self, fun: fn(&int)) {
    for self.n.each |f| {
      fun(f);
    }
  }
}

fn bar(f: &mut Foo) {
  do f.foo |a| {
    f.n.insert(*a);
  }
}

fn main() {
  let mut f = Foo { n: LinearSet::new() };
  bar(&mut f);
}