rust/src/test/run-pass/alt-join.rs

32 lines
869 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 mod std;
fn foo<T>(y: Option<T>) {
let mut x: int;
let mut rs: ~[int] = ~[];
/* tests that x doesn't get put in the precondition for the
entire if expression */
if true {
} else {
match y {
None::<T> => x = 17,
_ => x = 42
}
rs += ~[x];
}
return;
}
pub fn main() { debug!("hello"); foo::<int>(Some::<int>(5)); }