// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. fn main() { let mut escaped = String::from(""); for c in '\u{10401}'.escape_unicode() { escaped.push(c); } assert_eq!("\\u{10401}", escaped); }