rust/src/test/compile-fail/borrowck-insert-during-each.rs
Alex Crichton 2a14e084cf Move std::{trie, hashmap} to libcollections
These two containers are indeed collections, so their place is in
libcollections, not in libstd. There will always be a hash map as part of the
standard distribution of Rust, but by moving it out of the standard library it
makes libstd that much more portable to more platforms and environments.

This conveniently also removes the stuttering of 'std::hashmap::HashMap',
although 'collections::HashMap' is only one character shorter.
2014-02-23 00:35:11 -08:00

37 lines
884 B
Rust

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