2 #![allow(unused_variables)]
3 #![allow(stable_features)]
5 #![feature(box_syntax, core)]
7 use std::cell::RefCell;
10 #[derive(PartialEq, Debug)]
17 let box_5: Box<_> = box 5_usize;
18 let point = Rc::new(Point {x: 2, y: 4});
19 assert_eq!(point.x, 2);
20 assert_eq!(point.y, 4);
22 let i = Rc::new(RefCell::new(2));
23 let i_value = *i.borrow();
25 assert_eq!((i_value, *i.borrow()), (2, 5));
27 let s = Rc::new("foo".to_string());
28 assert_eq!(&**s, "foo");
30 let mut_s = Rc::new(RefCell::new(String::from("foo")));
31 mut_s.borrow_mut().push_str("bar");
32 // HACK assert_eq! would panic here because it stores the LHS and RHS in two locals.
33 assert_eq!(&**mut_s.borrow(), "foobar");
34 assert_eq!(&**mut_s.borrow_mut(), "foobar");
36 let p = Rc::new(RefCell::new(Point {x: 1, y: 2}));
38 p.borrow_mut().y += 3;
39 assert_eq!(*p.borrow(), Point {x: 3, y: 5});
41 let v = Rc::new(RefCell::new([1, 2, 3]));
42 v.borrow_mut()[0] = 3;
43 v.borrow_mut()[1] += 3;
44 assert_eq!((v.borrow()[0], v.borrow()[1], v.borrow()[2]), (3, 5, 3));