// Copyright 2014 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 sum(x: &[int]) -> int { let mut sum = 0; for y in x.iter() { sum += *y; } return sum; } fn sum_mut(y: &mut [int]) -> int { sum(y) } fn sum_imm(y: &[int]) -> int { sum(y) } pub fn main() {}