rust/src/test/run-pass/block-arg-call-as.rs

// 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 asSendfn( f : fn~()->uint ) -> uint {
   return f();
}

fn asLambda( f : fn@()->uint ) -> uint {
   return f();
}

fn asBlock( f : fn&()->uint ) -> uint {
   return f();
}

fn asAny( f : fn()->uint ) -> uint {
   return f();
}

fn main() {
   let x = asSendfn(|| 22u);
   assert(x == 22u);
   let x = asLambda(|| 22u);
   assert(x == 22u);
   let x = asBlock(|| 22u);
   assert(x == 22u);
}