Fixed #51 : I can compile simple recognize

src/core/utils.py

@@ -305,6 +305,40 @@ def dict_product(a, b):
     return res
 
 
+def merge_dictionaries(a, b):
+    """
+    Returns a new dictionary which is the merge
+    :param a: 
+    :param b: 
+    :return: 
+    """
+    if a is None and b is None:
+        return None
+
+    res = {}
+    if a:
+        res.update(a)
+
+    if b:
+        res.update(b)
+
+    return res
+
+
+def merge_sets(a, b):
+    if a is None and b is None:
+        return None
+
+    res = set()
+    if a:
+        res.update(a)
+
+    if b:
+        res.update(b)
+
+    return res
+
+
 def get_n_clones(obj, n):
     objs = [obj]
     for i in range(n - 1):