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+definition module StdNum
+
+import StdClass
+import StdQ // optioneel als je StdQ geimplementeerd hebt
+
+:: Num
+
+instance == Num
+instance < Num
+
+instance + Num
+instance - Num
+instance zero Num
+
+instance * Num
+instance / Num
+instance one Num
+
+instance abs Num
+instance sign Num
+instance ~ Num
+
+instance toInt Num
+instance toReal Num
+instance toQ Num // optioneel als je StdQ geimplementeerd hebt
+
+class fromNum a :: !Num -> a
+instance fromNum Int
+instance fromNum Real
+instance fromNum Q // optioneel als je StdQ geimplementeerd hebt
+
+class toNum a :: !a -> Num
+instance toNum Int
+instance toNum Real
+instance toNum Q // optioneel als je StdQ geimplementeerd hebt
+
+instance toString Num