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diff lib/ur/top.urs @ 653:e5894f0e541a

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Change location/type of [fold] to be more uniform w.r.t. derived folders
author Adam Chlipala <adamc@hcoop.net>
date Thu, 12 Mar 2009 10:26:04 -0400
parents fcf0bd3d1667
children 5bbb542243e8
line wrap: on
line diff
--- a/lib/ur/top.urs	Thu Mar 12 10:16:59 2009 -0400
+++ b/lib/ur/top.urs	Thu Mar 12 10:26:04 2009 -0400
@@ -2,13 +2,13 @@
 
 con folder :: K --> {K} -> Type
 
+val fold : K --> tf :: ({K} -> Type)
+           -> (nm :: Name -> v :: K -> r :: {K} -> [[nm] ~ r] =>
+               tf r -> tf ([nm = v] ++ r))
+           -> tf []
+           -> r :: {K} -> folder r -> tf r
+
 structure Folder : sig
-    val fold : K --> r :: {K} -> folder r
-               -> tf :: ({K} -> Type)
-               -> (nm :: Name -> v :: K -> r :: {K} -> tf r
-                   -> [[nm] ~ r] => tf ([nm = v] ++ r))
-               -> tf [] -> tf r
-
     val nil : K --> folder (([]) :: {K})
     val cons : K --> r ::: {K} -> nm :: Name -> v :: K
                -> [[nm] ~ r] => folder r -> folder ([nm = v] ++ r)