add last exception for functype

diff --git a/sem.icl b/sem.icl
index 668bbeb..e714dbf 100644 (file)
--- a/sem.icl
+++ b/sem.icl
@@ -143,6 +143,7 @@ unify (TupleType (ta1,ta2)) (TupleType (tb1,tb2)) = unify ta1 tb1 >>= \s1->
                                                     unify ta2 tb2 >>= \s2->
                                                     Right $ compose s1 s2
 unify (ListType t1) (ListType t2) = unify t1 t2
+unify (FuncType t1) (FuncType t2) = unify t1 t2
 unify t1 t2 | t1 == t2  = Right zero
             | otherwise = Left $ UnifyError zero t1 t2