| // Copyright 2018 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. |
| |
| // compile-flags:--test |
| |
| /// ```rust,edition2018 |
| /// #![feature(try_blocks)] |
| /// |
| /// use std::num::ParseIntError; |
| /// |
| /// let result: Result<i32, ParseIntError> = try { |
| /// "1".parse::<i32>()? |
| /// + "2".parse::<i32>()? |
| /// + "3".parse::<i32>()? |
| /// }; |
| /// assert_eq!(result, Ok(6)); |
| /// |
| /// let result: Result<i32, ParseIntError> = try { |
| /// "1".parse::<i32>()? |
| /// + "foo".parse::<i32>()? |
| /// + "3".parse::<i32>()? |
| /// }; |
| /// assert!(result.is_err()); |
| /// ``` |
| |
| |
| /// ```rust,edition2015,compile_fail,E0574 |
| /// #![feature(try_blocks)] |
| /// |
| /// use std::num::ParseIntError; |
| /// |
| /// let result: Result<i32, ParseIntError> = try { |
| /// "1".parse::<i32>()? |
| /// + "2".parse::<i32>()? |
| /// + "3".parse::<i32>()? |
| /// }; |
| /// assert_eq!(result, Ok(6)); |
| /// |
| /// let result: Result<i32, ParseIntError> = try { |
| /// "1".parse::<i32>()? |
| /// + "foo".parse::<i32>()? |
| /// + "3".parse::<i32>()? |
| /// }; |
| /// assert!(result.is_err()); |
| /// ``` |
| |
| pub fn foo() {} |