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// 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]>) -> uint {
params.unwrap().head().unwrap().len()
}
fn main() {
let name = "Foo";
let msg = foo(Some(&[name.as_slice()]));
//~^ ERROR mismatched types: expected `core::option::Option<&[&str]>`
assert_eq!(msg, 3);
}
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