56 lines
837 B
Rust
56 lines
837 B
Rust
#![feature(tool_lints)]
|
|
|
|
|
|
#[warn(clippy::cmp_owned)]
|
|
#[allow(clippy::unnecessary_operation)]
|
|
fn main() {
|
|
fn with_to_string(x : &str) {
|
|
x != "foo".to_string();
|
|
|
|
"foo".to_string() != x;
|
|
}
|
|
|
|
let x = "oh";
|
|
|
|
with_to_string(x);
|
|
|
|
x != "foo".to_owned();
|
|
|
|
x != String::from("foo");
|
|
|
|
42.to_string() == "42";
|
|
|
|
Foo.to_owned() == Foo;
|
|
}
|
|
|
|
struct Foo;
|
|
|
|
impl PartialEq for Foo {
|
|
fn eq(&self, other: &Self) -> bool {
|
|
self.to_owned() == *other
|
|
}
|
|
}
|
|
|
|
impl ToOwned for Foo {
|
|
type Owned = Bar;
|
|
fn to_owned(&self) -> Bar {
|
|
Bar
|
|
}
|
|
}
|
|
|
|
#[derive(PartialEq)]
|
|
struct Bar;
|
|
|
|
impl PartialEq<Foo> for Bar {
|
|
fn eq(&self, _: &Foo) -> bool {
|
|
true
|
|
}
|
|
}
|
|
|
|
impl std::borrow::Borrow<Foo> for Bar {
|
|
fn borrow(&self) -> &Foo {
|
|
static FOO: Foo = Foo;
|
|
&FOO
|
|
}
|
|
}
|