print (FunExpr _ id as fs) = printFunCall id as ++ printSelectors fs
print (EmptyListExpr _) = ["[]"]
print (TupleExpr _ (e1, e2)) = ["(":print e1] ++ [",":print e2] ++ [")"]
print (FunExpr _ id as fs) = printFunCall id as ++ printSelectors fs
print (EmptyListExpr _) = ["[]"]
print (TupleExpr _ (e1, e2)) = ["(":print e1] ++ [",":print e2] ++ [")"]