src/test/run-pass/mut-function-arguments.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 fn f(mut y: ~int) {
  12     *y = 5;
  13     assert!(*y == 5);
  14 }
  15
  16 fn g() {
  17     let frob: &fn(~int) = |mut q| { *q = 2; assert!(*q == 2); };
  18     let w = ~37;
  19     frob(w);
  20
  21 }
  22
  23 pub fn main() {
  24     let z = ~17;
  25     f(z);
  26     g();
  27 }