| // 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. |
| |
| fn checktrue(rs: bool) -> bool { assert!((rs)); return true; } |
| |
| pub fn main() { let k = checktrue; evenk(42, k); oddk(45, k); } |
| |
| fn evenk(n: isize, k: fn(bool) -> bool) -> bool { |
| println!("evenk"); |
| println!("{}", n); |
| if n == 0 { return k(true); } else { return oddk(n - 1, k); } |
| } |
| |
| fn oddk(n: isize, k: fn(bool) -> bool) -> bool { |
| println!("oddk"); |
| println!("{}", n); |
| if n == 0 { return k(false); } else { return evenk(n - 1, k); } |
| } |
