// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. fn range(a: int, b: int, it: fn(int)) { assert (a < b); let mut i: int = a; while i < b { it(i); i += 1; } } fn main() { let mut sum: int = 0; range(0, 100, |x| sum += x ); log(debug, sum); }