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-rw-r--r--IterableClass.dcl10
1 files changed, 5 insertions, 5 deletions
diff --git a/IterableClass.dcl b/IterableClass.dcl
index 729cd68..73c9776 100644
--- a/IterableClass.dcl
+++ b/IterableClass.dcl
@@ -1,10 +1,10 @@
definition module IterableClass
-class step a :: a -> a
-class rewind a :: a -> a
+class step a :: !a -> a
+class rewind a :: !a -> a
-stepn :: Int a -> a | step a
-rewindn :: Int a -> a | rewind a
+stepn :: Int !a -> a | step a
+rewindn :: Int !a -> a | rewind a
-stepOrRewindn :: Int a -> a | step, rewind a
+stepOrRewindn :: Int !a -> a | step, rewind a