48 lines
1.1 KiB
Rust
48 lines
1.1 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution.
|
|
//
|
|
// 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(tool_lints)]
|
|
|
|
#![allow(clippy::print_literal, clippy::write_literal)]
|
|
#![warn(clippy::print_stdout, clippy::use_debug)]
|
|
|
|
use std::fmt::{Debug, Display, Formatter, Result};
|
|
|
|
#[allow(dead_code)]
|
|
struct Foo;
|
|
|
|
impl Display for Foo {
|
|
fn fmt(&self, f: &mut Formatter) -> Result {
|
|
write!(f, "{:?}", 43.1415)
|
|
}
|
|
}
|
|
|
|
impl Debug for Foo {
|
|
fn fmt(&self, f: &mut Formatter) -> Result {
|
|
// ok, we can use `Debug` formatting in `Debug` implementations
|
|
write!(f, "{:?}", 42.718)
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
println!("Hello");
|
|
print!("Hello");
|
|
|
|
print!("Hello {}", "World");
|
|
|
|
print!("Hello {:?}", "World");
|
|
|
|
print!("Hello {:#?}", "#orld");
|
|
|
|
assert_eq!(42, 1337);
|
|
|
|
vec![1, 2];
|
|
}
|