Generics review the code and UT #79

- changed the file name NodeObservable.cs to NodeEnumerable.cs
- Now the class is derived from Node.cs
- it is working copy
- UT green

Lecture/Lecture/Lecture.csproj

@@ -62,7 +62,7 @@
     <Compile Include="LessonExtensionMethods\IMyInterface.cs" />
     <Compile Include="LessonGenerics\Generics.cs" />
     <Compile Include="InterfaceExample.cs" />
-    <Compile Include="LessonGenerics\NodeObservable.cs" />
+    <Compile Include="LessonGenerics\NodeEnumerable.cs" />
     <Compile Include="LinqExtensions.cs" />
     <Compile Include="LessonGenerics\Node.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />

Lecture/Lecture/LessonGenerics/Generics.cs

@@ -33,7 +33,6 @@ public MethodType GenericMethod<MethodType>(MethodType methodTypeParameter)
     {
       return methodTypeParameter;
     }
-
   }
 
   public class SelfDictionary<Type> : Dictionary<Type, Type>

Lecture/Lecture/LessonGenerics/Node.cs

@@ -1,11 +1,11 @@
 namespace TP.Lecture.LessonGenerics
 {
-  class Node<ClassA>
+  public class Node<ValueTypeParameter>
   {
-    public Node<ClassA> Next { get; private set; }
-    public static Node<ClassA> First { get; private set; } = null;
-    public ClassA Value { get; private set; }
-    public Node(ClassA value)
+    public Node<ValueTypeParameter> Next { get; private set; }
+    public static Node<ValueTypeParameter> First { get; private set; } = null;
+    public ValueTypeParameter Value { get; private set; }
+    public Node(ValueTypeParameter value)
     {
       Value = value;
       Next = First;

Lecture/Lecture/LessonGenerics/NodeEnumerable.cs

@@ -0,0 +1,30 @@
+
+using System.Collections;
+using System.Collections.Generic;
+
+namespace TP.Lecture.LessonGenerics
+{
+  public class NodeEnumerable<ValueTypeParameter> : Node<ValueTypeParameter>, IEnumerable<ValueTypeParameter>
+  {
+    public NodeEnumerable(ValueTypeParameter value) : base(value) {  }
+
+    #region IEnumerable<TypeParameter>
+    public IEnumerator<ValueTypeParameter> GetEnumerator()
+    {
+      Node<ValueTypeParameter> _current = First;
+      while (_current != null)
+      {
+        ValueTypeParameter _value = _current.Value;
+        _current = _current.Next;
+        yield return _value;
+      }
+    }
+    IEnumerator IEnumerable.GetEnumerator()
+    {
+      return this.GetEnumerator();
+    }
+    #endregion
+
+  }
+
+}