{-# OPTIONS_GHC -XModalTypes -fflatten -funsafe-skolemize -dcore-lint #-} module Demo (demo) where --demo con mer = <[ ~~mer ~~(con (2::Int)) ~~(con (12::Int)) ]> demo const mult = <[ let four = ~~mult four ~~(const 4) -- twelve = {- {- ~~mult four -} ~~(const 12) -} four in four ]> demo :: forall a c . (Int -> <[a]>@c) -> <[a -> a -> a]>@c -> <[a]>@c {- demo const mult = <[ let twelve = ~~(const (12::Int)) in let four = ~~(const (4::Int)) in ~~mult four twelve ]> -} {- demo const mult = <[ let twelve = ~~(const (12::Int)) in let twelvea = twelve four = ~~(const (4::Int)) twelveb = twelve in ~~mult (~~mult twelvea four) (~~mult twelveb twelveb) ]> -} {- demo const mult = demo' 3 where demo' 0 = const 12 demo' 1 = const 12 demo' n = <[ ~~mult ~~(demo' (n-1)) ~~(demo' (n-2)) ]> -}