rust/src/test/run-pass/expr-match-generic-unique1.rs
Patrick Walton 090040bf40 librustc: Remove ~EXPR, ~TYPE, and ~PAT from the language, except
for `~str`/`~[]`.

Note that `~self` still remains, since I forgot to add support for
`Box<self>` before the snapshot.

How to update your code:

* Instead of `~EXPR`, you should write `box EXPR`.

* Instead of `~TYPE`, you should write `Box<Type>`.

* Instead of `~PATTERN`, you should write `box PATTERN`.

[breaking-change]
2014-05-06 23:12:54 -07:00

30 lines
922 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.
type compare<T> = |Box<T>, Box<T>|: 'static -> bool;
fn test_generic<T:Clone>(expected: Box<T>, eq: compare<T>) {
let actual: Box<T> = match true {
true => { expected.clone() },
_ => fail!("wat")
};
assert!((eq(expected, actual)));
}
fn test_box() {
fn compare_box(b1: Box<bool>, b2: Box<bool>) -> bool {
return *b1 == *b2;
}
test_generic::<bool>(box true, compare_box);
}
pub fn main() { test_box(); }