1 // Copyright 2014 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 #![feature(box_syntax)]
14 let mut foo: Option<Box<_>> = Some(box 5);
21 println!("'{}'", foo.unwrap());
24 fn match_on_arg(mut foo: Option<Box<i32>>) {
31 println!("'{}'", foo.unwrap());
34 fn match_on_binding() {
35 match Some(Box::new(7)) {
43 println!("'{}'", foo.unwrap());
49 let mut foo: Option<Box<_>> = Some(box 8);
57 println!("'{}'", foo.unwrap());
64 match_on_arg(Some(box 6));