Graph

README.md

@@ -2,4 +2,20 @@
 TensorFlow.NET provides .NET Standard binding for [TensorFlow](https://www.tensorflow.org/).
 
 
-TensorFlow.NET is a member project of SciSharp stack.
+TensorFlow.NET is a member project of SciSharp stack.
+
+### How to use
+```cs
+using tf = TensorFlowNET.Core.Tensorflow;
+
+namespace TensorFlowNET.Examples
+{
+    public class HelloWorld : IExample
+    {
+        public void Run()
+        {
+
+        }
+    }
+}
+```

src/TensorFlowNET.Core/Graph.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace TensorFlowNET.Core
+{
+    /// <summary>
+    /// TensorFlow uses a dataflow graph to represent your computation in terms of the dependencies between individual operations. 
+    /// This leads to a low-level programming model in which you first define the dataflow graph, 
+    /// then create a TensorFlow session to run parts of the graph across a set of local and remote devices.
+    /// https://www.tensorflow.org/guide/graphs
+    /// </summary>
+    public class Graph
+    {
+        public IntPtr TFGraph { get; set; }
+
+        public Operation create_op()
+        {
+            var op = new Operation(this);
+
+            return op;
+        }
+    }
+}

src/TensorFlowNET.Core/Operation.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace TensorFlowNET.Core
+{
+    public class Operation
+    {
+        private Graph _graph;
+
+        public Operation(Graph g)
+        {
+            _graph = g;
+        }
+    }
+}

src/TensorFlowNET.Core/Tensorflow.cs

@@ -13,5 +13,27 @@ namespace TensorFlowNET.Core
         public static extern unsafe IntPtr TF_Version();
 
         public static string VERSION => Marshal.PtrToStringAnsi(TF_Version());
+
+        [DllImport(TensorFlowLibName)]
+        static extern unsafe IntPtr TF_NewOperation(IntPtr graph, string opType, string oper_name);
+
+        [DllImport(TensorFlowLibName)]
+        static extern unsafe IntPtr TF_FinishOperation(IntPtr desc, IntPtr status);
+
+        public static IntPtr constant<T>(T value)
+        {
+            var g = Graph();
+            return TF_NewOperation(g.TFGraph, "Const", "Const");
+        }
+
+        [DllImport(TensorFlowLibName)]
+        static extern unsafe IntPtr TF_NewGraph();
+
+        public static Graph Graph()
+        {
+            Graph g = new Graph();
+            g.TFGraph = TF_NewGraph();
+            return g;
+        }
     }
 }

tensorflowlib/README.md

@@ -4,4 +4,4 @@ Here are some pre-built TensorFlow binaries you can use for each platform:
   - CPU-only: https://storage.googleapis.com/tensorflow/libtensorflow/libtensorflow-cpu-linux-x86_64-1.12.0.tar.gz
   - GPU-enabled: https://storage.googleapis.com/tensorflow/libtensorflow/libtensorflow-gpu-linux-x86_64-1.12.0.tar.gz
 - Mac: https://storage.googleapis.com/tensorflow/libtensorflow/libtensorflow-cpu-darwin-x86_64-1.12.0.tar.gz
-- Windows: https://storage.googleapis.com/tensorflow/libtensorflow/libtensorflow-cpu-windows-x86_64-1.12.0-rc0.zip
+- Windows: https://storage.googleapis.com/tensorflow/libtensorflow/libtensorflow-cpu-windows-x86_64-1.12.0.zip

test/TensorFlowNET.Examples/HelloWorld.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using tf = TensorFlowNET.Core.Tensorflow;
+
+namespace TensorFlowNET.Examples
+{
+    /// <summary>
+    /// Simple hello world using TensorFlow
+    /// https://github.com/aymericdamien/TensorFlow-Examples/blob/master/examples/1_Introduction/helloworld.py
+    /// </summary>
+    public class HelloWorld : IExample
+    {
+        public void Run()
+        {
+            /* # Create a Constant op
+              The op is added as a node to the default graph.
+            
+              The value returned by the constructor represents the output
+              of the Constant op.*/
+            var hello = tf.constant("Hello, TensorFlow!");
+
+            // Start tf session
+            // var sess = tf.Session();
+        }
+    }
+}

test/TensorFlowNET.Examples/IExample.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace TensorFlowNET.Examples
+{
+    public interface IExample
+    {
+        void Run();
+    }
+}

test/TensorFlowNET.UnitTest/GraphTest.cs

@@ -0,0 +1,18 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using tf = TensorFlowNET.Core.Tensorflow;
+
+namespace TensorFlowNET.UnitTest
+{
+    [TestClass]
+    public class GraphTest
+    {
+        [TestMethod]
+        public void ConstructGraph()
+        {
+            var g = tf.Graph();
+        }
+    }
+}

test/TensorFlowNET.UnitTest/OperationsTest.cs

@@ -0,0 +1,18 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using tf = TensorFlowNET.Core.Tensorflow;
+
+namespace TensorFlowNET.UnitTest
+{
+    [TestClass]
+    public class OperationsTest
+    {
+        [TestMethod]
+        public void constant()
+        {
+            tf.constant(4.0);
+        }
+    }
+}