| // 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. |
| |
| |
| |
| fn main() { |
| if let Ok(x) = "3.1415".parse::<f64>() { |
| assert_eq!(false, x <= 0.0); |
| } |
| if let Ok(x) = "3.1415".parse::<f64>() { |
| assert_eq!(3.1415, x + 0.0); |
| } |
| if let Ok(mut x) = "3.1415".parse::<f64>() { |
| assert_eq!(8.1415, { x += 5.0; x }); |
| } |
| } |
