clean up demo code

[coq-hetmet.git] / examples / Demo.hs

diff --git a/examples/Demo.hs b/examples/Demo.hs
index 6d0e69d..3f63168 100644 (file)
--- a/examples/Demo.hs
+++ b/examples/Demo.hs
@@ -1,15 +1,22 @@
-{-# OPTIONS_GHC -XModalTypes -fflatten -funsafe-skolemize -dcore-lint #-}
+{-# OPTIONS_GHC -XModalTypes -fflatten -funsafe-skolemize -dcore-lint -XScopedTypeVariables #-}
 module Demo (demo) where
 
 
 --demo con mer = <[ ~~mer ~~(con (2::Int)) ~~(con (12::Int)) ]>
 
 demo const mult =
-   <[ let twelve = ~~(const (12::Int))
-          four   = ~~(const ( 4::Int))
-      in  ~~mult four (~~mult four twelve)
+   <[ \(y::Int) ->
+      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 ->
+        <[Int -> a]>@c
+
 {-
 demo const mult =
  <[ let     twelve = ~~(const (12::Int))