1 // Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution.
4 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
5 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
7 // option. This file may not be copied, modified, or distributed
8 // except according to those terms.
11 #![feature(tool_lints)]
13 #![allow(clippy::print_literal, clippy::write_literal)]
14 #![warn(clippy::print_stdout, clippy::use_debug)]
16 use std::fmt::{Debug, Display, Formatter, Result};
21 impl Display for Foo {
22 fn fmt(&self, f: &mut Formatter) -> Result {
23 write!(f, "{:?}", 43.1415)
28 fn fmt(&self, f: &mut Formatter) -> Result {
29 // ok, we can use `Debug` formatting in `Debug` implementations
30 write!(f, "{:?}", 42.718)
38 print!("Hello {}", "World");
40 print!("Hello {:?}", "World");
42 print!("Hello {:#?}", "#orld");