Trait Jump
lysbilder
pub trait Jump { type Previous; type Next; }
type Previous
type Next
impl Jump for Slide1 type Previous = (); type Next = Slide2;
impl Jump for Slide2 type Previous = Slide1; type Next = Slide3;
impl Jump for Slide3 type Previous = Slide2; type Next = Slide4;
impl Jump for Slide4 type Previous = Slide3; type Next = ();