1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
//@ run-pass
trait Equal {
fn equal(&self, other: &Self) -> bool;
fn equals<T,U>(&self, this: &T, that: &T, x: &U, y: &U) -> bool
where T: Eq, U: Eq;
}
impl<T> Equal for T where T: Eq {
fn equal(&self, other: &T) -> bool {
self == other
}
fn equals<U,X>(&self, this: &U, other: &U, x: &X, y: &X) -> bool
where U: Eq, X: Eq {
this == other && x == y
}
}
fn equal<T>(x: &T, y: &T) -> bool where T: Eq {
x == y
}
fn main() {
println!("{}", equal(&1, &2));
println!("{}", equal(&1, &1));
println!("{}", "hello".equal(&"hello"));
println!("{}", "hello".equals::<isize,&str>(&1, &1, &"foo", &"bar"));
}
|
