| // Copyright 2015 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. |
| |
| // Test to see that the element type of .cloned() can be inferred |
| // properly. Previously this would fail to deduce the type of `sum`. |
| |
| #![feature(iter_arith)] |
| |
| fn square_sum(v: &[i64]) -> i64 { |
| let sum: i64 = v.iter().cloned().sum(); |
| sum * sum |
| } |
| |
| fn main() { |
| assert_eq!(36, square_sum(&[1,2,3])); |
| } |
