From ea5d35e219222bd15b541d2ac72f2b8c69a93d89 Mon Sep 17 00:00:00 2001
From: Oceania2018 <haiping008@gmail.com>
Date: Thu, 24 Jan 2019 07:31:18 -0600
Subject: [PATCH] control_flow_ops._GroupControlDeps

---
 .../Operations/control_flow_ops.py.cs                | 12 +++++++++++-
 src/TensorFlowNET.Core/Variables/tf.variable.cs      |  2 +-
 src/TensorFlowNET.Core/Variables/variables.py.cs     |  8 +++++---
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/src/TensorFlowNET.Core/Operations/control_flow_ops.py.cs b/src/TensorFlowNET.Core/Operations/control_flow_ops.py.cs
index 544273ba..b6fe4d78 100644
--- a/src/TensorFlowNET.Core/Operations/control_flow_ops.py.cs
+++ b/src/TensorFlowNET.Core/Operations/control_flow_ops.py.cs
@@ -6,7 +6,17 @@ namespace Tensorflow
 {
     public class control_flow_ops
     {
-        public static Operation group(Operation[] inputs)
+        public static Operation group(List<Operation> inputs, string name = "")
+        {
+            using(var namescope = new ops.name_scope<Operation>(name, "group_deps", inputs))
+            {
+                // Sorts *inputs according to their devices.
+
+                return _GroupControlDeps("", name);
+            }
+        }
+
+        private static Operation _GroupControlDeps(string dev, string name = "")
         {
             return null;
         }
diff --git a/src/TensorFlowNET.Core/Variables/tf.variable.cs b/src/TensorFlowNET.Core/Variables/tf.variable.cs
index f3f960e2..06680b05 100644
--- a/src/TensorFlowNET.Core/Variables/tf.variable.cs
+++ b/src/TensorFlowNET.Core/Variables/tf.variable.cs
@@ -9,7 +9,7 @@ namespace Tensorflow
         public static Operation global_variables_initializer()
         {
             var g = variables.global_variables();
-            return variables.variables_initializer(g as RefVariable[]);
+            return variables.variables_initializer(g.ToArray());
         }
     }
 }
diff --git a/src/TensorFlowNET.Core/Variables/variables.py.cs b/src/TensorFlowNET.Core/Variables/variables.py.cs
index 596cc5ab..ecb635ce 100644
--- a/src/TensorFlowNET.Core/Variables/variables.py.cs
+++ b/src/TensorFlowNET.Core/Variables/variables.py.cs
@@ -27,9 +27,11 @@ namespace Tensorflow
         /// special tokens filters by prefix.
         /// </param>
         /// <returns>A list of `Variable` objects.</returns>
-        public static object global_variables(string scope = "")
+        public static List<RefVariable> global_variables(string scope = "")
         {
-            return ops.get_collection(ops.GraphKeys.GLOBAL_VARIABLES, scope);
+            var result = ops.get_collection(ops.GraphKeys.GLOBAL_VARIABLES, scope);
+
+            return result as List<RefVariable>;
         }
 
         /// <summary>
@@ -40,7 +42,7 @@ namespace Tensorflow
         /// <returns>An Op that run the initializers of all the specified variables.</returns>
         public static Operation variables_initializer(RefVariable[] var_list, string name = "init")
         {
-            return control_flow_ops.group(var_list.Select(x => x.initializer).ToArray());
+            return control_flow_ops.group(var_list.Select(x => x.initializer).ToList());
         }
     }
 }