rust/tests/ui/print.rs

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Rust
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#![allow(clippy::print_literal, clippy::write_literal)]
#![warn(clippy::print_stdout, clippy::use_debug)]
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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() {
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println!("Hello");
print!("Hello");
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print!("Hello {}", "World");
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print!("Hello {:?}", "World");
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print!("Hello {:#?}", "#orld");
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assert_eq!(42, 1337);
vec![1, 2];
}