2018-07-28 23:34:52 +08:00
|
|
|
#[warn(clippy::cmp_owned)]
|
|
|
|
#[allow(clippy::unnecessary_operation)]
|
2015-05-21 20:51:43 +08:00
|
|
|
fn main() {
|
2018-12-10 06:26:16 +08:00
|
|
|
fn with_to_string(x: &str) {
|
2015-10-13 06:46:05 +08:00
|
|
|
x != "foo".to_string();
|
2017-02-08 21:58:07 +08:00
|
|
|
|
2015-10-13 06:46:05 +08:00
|
|
|
"foo".to_string() != x;
|
2015-08-12 02:22:20 +08:00
|
|
|
}
|
2016-01-24 17:16:56 +08:00
|
|
|
|
|
|
|
let x = "oh";
|
|
|
|
|
2015-08-12 02:22:20 +08:00
|
|
|
with_to_string(x);
|
|
|
|
|
2017-02-08 21:58:07 +08:00
|
|
|
x != "foo".to_owned();
|
2015-08-12 02:22:20 +08:00
|
|
|
|
2017-02-08 21:58:07 +08:00
|
|
|
x != String::from("foo");
|
2016-01-18 22:35:50 +08:00
|
|
|
|
|
|
|
42.to_string() == "42";
|
2017-05-12 00:59:36 +08:00
|
|
|
|
|
|
|
Foo.to_owned() == Foo;
|
2018-10-09 10:04:29 +08:00
|
|
|
|
|
|
|
"abc".chars().filter(|c| c.to_owned() != 'X');
|
|
|
|
|
|
|
|
"abc".chars().filter(|c| *c != 'X');
|
2018-10-10 10:25:03 +08:00
|
|
|
|
|
|
|
let x = &Baz;
|
|
|
|
let y = &Baz;
|
|
|
|
|
|
|
|
y.to_owned() == *x;
|
2018-10-10 19:51:06 +08:00
|
|
|
|
|
|
|
let x = &&Baz;
|
|
|
|
let y = &Baz;
|
|
|
|
|
|
|
|
y.to_owned() == **x;
|
2017-05-12 00:59:36 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
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
|
|
|
|
}
|
2015-05-21 20:51:43 +08:00
|
|
|
}
|
2018-10-10 10:25:03 +08:00
|
|
|
|
|
|
|
#[derive(PartialEq)]
|
|
|
|
struct Baz;
|
|
|
|
|
|
|
|
impl ToOwned for Baz {
|
|
|
|
type Owned = Baz;
|
|
|
|
fn to_owned(&self) -> Baz {
|
|
|
|
Baz
|
|
|
|
}
|
|
|
|
}
|