1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 pub fn foo(params: Option<&[&str]>) -> uint {
12 params.unwrap().first().unwrap().len()
17 let msg = foo(Some(&[name.as_slice()]));
18 //~^ ERROR mismatched types: expected `core::option::Option<&[&str]>`