--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/AgdaStackSomeState.agda	Tue Sep 08 18:38:08 2020 +0900
@@ -0,0 +1,5 @@
+stackInSomeState : {l m : Level} {D : Set l} {t : Set m} (s : SingleLinkedStack D) -> Stack {l} {m} D {t}  ( SingleLinkedStack  D)
+stackInSomeState s =  record { stack = s ; stackMethods = singleLinkedStackSpec }
+
+push->push->pop2 : {l : Level} {D : Set l} (x y : D) (s : SingleLinkedStack D) -> pushStack (stackInSomeState s) x (\s1 -> pushStack s1 y (\s2 -> pop2Stack s2 (\s3 y1 x1 -> (Just x ≡ x1) ∧ (Just y ≡ y1))))
+push->push->pop2 {l} {D} x y s = record {pi1 = refl ; pi2 = refl}