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diff --git a/fp2/week45/mart/RefactorX.dcl b/fp2/week45/mart/RefactorX.dcl
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-// Mart Lubbers s4109503, Camil Staps s4498062
-
-definition module RefactorX
-
-from StdClass import class toString
-import StdEnv
-
-:: Expr = NR Int | VAR Name | OP Expr Operator Expr | LET Name Expr Expr
-:: Name :== String
-:: Operator = PLUS | MIN | MUL | DIV
-:: Val = Result Int | Undef
-
-
-instance toString Expr
-free :: Expr -> [Name]
-remove_unused_lets :: Expr -> Expr
-eval :: Expr -> Val