From 17a18d09526365443a710bb1fb7728d5c1f8ceea Mon Sep 17 00:00:00 2001
From: Mart Lubbers <mart@martlubbers.net>
Date: Wed, 13 Apr 2016 22:14:59 +0200
Subject: [PATCH] -

---
 sem.icl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sem.icl b/sem.icl
index 66d9024..475d093 100644
--- a/sem.icl
+++ b/sem.icl
@@ -135,7 +135,7 @@ typeExpr (VarExpr p (VarDef ident fs)) = gets (\(st, r)->'Map'.get ident st)
         Just t = unify t fs
 typeOp2 :: Expr Expr Op2 [Type] Type -> Env Type
 typeOp2 e1 e2 op ts ret = typeExpr e1 >>= \t1-> typeExpr e2 >>= \t2->
-    unify t1 t2 >>= \t3->if (isMember t3 ts) (pure ret)
+    unify t1 t2 >>= \t3->if (isMember t3 [IdType "":ts]) (pure ret)
         (liftT $ Left $ OperatorError (extrPos e1) op t3)
 
 buildFunctionType :: String [Expr] -> Env Type 
-- 
2.20.1