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--- project-3-draft [2021/04/25 16:04]
roxana_elena.stiuca [Similarities graph, using queries]
+++ project-3-draft [2021/04/25 16:07] (current)
roxana_elena.stiuca prerequisite for taskset3
@@ Line 34: / Line 34: @@
 **Don't worry about Graph or Filter queries yet.**
-====TODO====
+==== Prerequisite ====
-{-# LANGUAGE ExistentialQuantification #-} for "forall a."
+Add the following lines at the beginning of your .hs files:
+<code haskell>
+{-# LANGUAGE ExistentialQuantification #-}
+{-# LANGUAGE FlexibleInstances #-}
+</code>
+The first line allows ''forall a''.
+The second allows ''instance FEval String''.
-{-# LANGUAGE FlexibleInstances#-} for "instance FEval String where"
-====TODO====
 ===== Query Evaluation =====