| // 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 <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. |
| |
| pub fn foo(params: Option<&[&str]>) -> usize { |
| params.unwrap().first().unwrap().len() |
| } |
| |
| fn main() { |
| let name = "Foo"; |
| let x = Some(&[name]); |
| let msg = foo(x); |
| //~^ ERROR mismatched types |
| //~| expected type `std::option::Option<&[&str]>` |
| //~| found type `std::option::Option<&[&str; 1]>` |
| //~| expected slice, found array of 1 elements |
| assert_eq!(msg, 3); |
| } |
