69 lines
1.2 KiB
Rust
69 lines
1.2 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.
|
|
|
|
#![warn(clippy::unit_arg)]
|
|
#![allow(clippy::no_effect)]
|
|
|
|
use std::fmt::Debug;
|
|
|
|
fn foo<T: Debug>(t: T) {
|
|
println!("{:?}", t);
|
|
}
|
|
|
|
fn foo3<T1: Debug, T2: Debug, T3: Debug>(t1: T1, t2: T2, t3: T3) {
|
|
println!("{:?}, {:?}, {:?}", t1, t2, t3);
|
|
}
|
|
|
|
struct Bar;
|
|
|
|
impl Bar {
|
|
fn bar<T: Debug>(&self, t: T) {
|
|
println!("{:?}", t);
|
|
}
|
|
}
|
|
|
|
fn bad() {
|
|
foo({});
|
|
foo({
|
|
1;
|
|
});
|
|
foo(foo(1));
|
|
foo({
|
|
foo(1);
|
|
foo(2);
|
|
});
|
|
foo3({}, 2, 2);
|
|
let b = Bar;
|
|
b.bar({
|
|
1;
|
|
});
|
|
}
|
|
|
|
fn ok() {
|
|
foo(());
|
|
foo(1);
|
|
foo({ 1 });
|
|
foo3("a", 3, vec![3]);
|
|
let b = Bar;
|
|
b.bar({ 1 });
|
|
b.bar(());
|
|
question_mark();
|
|
}
|
|
|
|
fn question_mark() -> Result<(), ()> {
|
|
Ok(Ok(())?)?;
|
|
Ok(Ok(()))??;
|
|
Ok(())
|
|
}
|
|
|
|
fn main() {
|
|
bad();
|
|
ok();
|
|
}
|