1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 extern crate collections;
12 use std::collections::HashSet;
19 pub fn foo(&mut self, fun: |&int|) {
20 for f in self.n.iter() {
28 |a| { //~ ERROR closure requires unique access to `f`
34 let mut f = Foo { n: HashSet::new() };