src/test/ui/try-on-option.rs


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// Copyright 2017 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.

#![feature(try_trait)]

fn main() {}

fn foo() -> Result<u32, ()> {
    let x: Option<u32> = None;
    x?; //~ the trait bound
    Ok(22)
}

fn bar() -> u32 {
    let x: Option<u32> = None;
    x?; //~ the `?` operator
    22
}