src/test/run-pass/compare-generic-enums.rs

   1 // Copyright 2012 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.
   4 //
   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.
  10
  11
  12 type an_int = isize;
  13
  14 fn cmp(x: Option<an_int>, y: Option<isize>) -> bool {
  15     x == y
  16 }
  17
  18 pub fn main() {
  19     assert!(!cmp(Some(3), None));
  20     assert!(!cmp(Some(3), Some(4)));
  21     assert!(cmp(Some(3), Some(3)));
  22     assert!(cmp(None, None));
  23 }