rust/tests/ui/unit_arg.rs
2019-01-08 21:46:39 +01:00

60 lines
813 B
Rust

#![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();
}