File: where-clauses-method.rs

package info (click to toggle)
rustc 1.87.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 925,564 kB
  • sloc: xml: 158,127; python: 36,039; javascript: 19,761; sh: 19,737; cpp: 18,981; ansic: 13,133; asm: 4,376; makefile: 710; perl: 29; lisp: 28; ruby: 19; sql: 11
file content (20 lines) | stat: -rw-r--r-- 421 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
//@ run-pass
// Test that a where clause attached to a method allows us to add
// additional constraints to a parameter out of scope.

struct Foo<T> {
    value: T
}

impl<T> Foo<T> {
    fn equals(&self, u: &Foo<T>) -> bool where T : Eq {
        self.value == u.value
    }
}

fn main() {
    let x = Foo { value: 1 };
    let y = Foo { value: 2 };
    println!("{}", x.equals(&x));
    println!("{}", x.equals(&y));
}