Add pattern descriptionn on iterator pattern

src/IteratorPattern/IteratorPatternExamples.cs

@@ -1,15 +1,18 @@
 using IteratorPattern.FileExample;
 using IteratorPattern.TVExample.TVEnumerable;
 using IteratorPattern.TvIterator;
+using System;
 
 namespace IteratorPattern
 {
-    // This project can output the Class library as a NuGet Package.
-    // To enable this option, right-click on the project and select the Properties menu item. In the Build tab select "Produce outputs on build".
     public class IteratorPatternExamples
     {
         public static void Run()
         {
+            Console.WriteLine(GetPatternDescription());
+            Console.WriteLine(GetActors());
+            GoToNextStep();
+
             TVIteratorExample tvIteratorExample = new TVIteratorExample();
             tvIteratorExample.Run();
 
@@ -21,5 +24,28 @@ namespace IteratorPattern
 
             //Iterator that selects in batches
         }
+
+        public static string GetPatternDescription()
+        {
+            return @"Pattern description:
+In object-oriented programming, the iterator pattern is a design pattern in which an iterator is used to traverse a container and access the container's elements.
+C# interfaces helpers for Iterator pattern: IEnumerator<T>, IEnumerable<T>, yield for creating IEnumerable<T>
+Java: Iterator<E>, Iterable<E>";
+        }
+
+        public static string GetActors()
+        {
+            return @"Actors:
+Iterator: interface with hasNext/next/current methods or variantions from this
+Concrete interator: concrete class that implements Iterator
+Aggregate: interface for returning the iterator
+Concrete aggregate: imlpementation of aggregate";
+        }
+
+        private static void GoToNextStep()
+        {
+            Console.ReadKey();
+            Console.Clear();
+        }
     }
 }