Rust-lifetime-test.rs

use std::borrow::Borrow;
use std::boxed::Box;

enum Foo {
    Bar,
    Baz,
}

fn compare<T1 : Borrow<Foo>, T2 : Borrow<Foo>>(x : T1, y : T2) -> bool
{
    match (*x.borrow(), *y.borrow())
    {
        (&Foo::Bar, &Foo::Bar) => true,
        (&Foo::Baz, &Foo::Baz) => true,
        _ => false
    }
}

fn tupleRef<T>(myRef: T) -> (T, i32)
  where T : Borrow<Foo>
{
    return (myRef, 3);
}

fn goodTupleUse() -> ( Box<Foo> , i32)
  {
    let x = Foo::Bar ;
    tupleRef(Box::new(x))
}



fn main() {}