11 trait Callback
<T
: Foo
>: Fn(&T
, &T
::V
) {}
12 impl<T
: Foo
, F
: Fn(&T
, &T
::V
)> Callback
<T
> for F {}
15 callback
: Box
<dyn Callback
<T
>>,
20 (self.callback
)(any(), any());
31 let foo
= Bar
::<A
> { callback: Box::new(|_: &A, _: &B| ()) }
;