From ec91398d7f2ab9db88019a1837a4b7b1aedd7d0a Mon Sep 17 00:00:00 2001
From: Pedro Avila <pedroulisesavila@gmail.com>
Date: Mon, 2 Oct 2023 19:28:57 -0500
Subject: [PATCH] Implemetacion de Singleton

---
 Starter solution/Singleton/Implementation.cs | 31 ++++++++++++++++++++
 Starter solution/Singleton/Program.cs        | 17 ++++++++++-
 2 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/Starter solution/Singleton/Implementation.cs b/Starter solution/Singleton/Implementation.cs
index ba01372..3326e38 100644
--- a/Starter solution/Singleton/Implementation.cs	
+++ b/Starter solution/Singleton/Implementation.cs	
@@ -1,4 +1,35 @@
 namespace Singleton
 {
+
+    public class Logger
+    {
+        // Lazy<T>
+        private static readonly Lazy<Logger> _lazyLogger
+            = new Lazy<Logger>(() => new Logger());
+
+        //private static Logger? _instance;
+
+        public static Logger Instance
+        {
+            get
+            {
+                return _lazyLogger.Value;
+                //if (_instance == null)
+                //    _instance = new Logger();
+                //return _instance;
+            }
+        }
+
+        protected Logger() 
+        {
+        }
+
+        /// <summary>
+        /// SingletonOperation
+        /// </summary>
+        /// <param name="message"></param>
+        public void Log(string message) => Console.WriteLine($"Message to log: {message}");
+        
+    }
   
 }
diff --git a/Starter solution/Singleton/Program.cs b/Starter solution/Singleton/Program.cs
index 1dfa0be..c6f72e6 100644
--- a/Starter solution/Singleton/Program.cs	
+++ b/Starter solution/Singleton/Program.cs	
@@ -1 +1,16 @@
-Console.Title = "Singleton";
\ No newline at end of file
+using Singleton;
+
+Console.Title = "Singleton";
+
+var instance1 = Logger.Instance;
+var instance2 = Logger.Instance;
+
+if (instance1 == instance2 && instance2 == Logger.Instance)
+    Console.WriteLine("Instances are the same.");
+
+instance1.Log($"Message from {nameof(instance1)}");
+instance1.Log($"Message from {nameof(instance2)}");
+
+Logger.Instance.Log($"Message from {nameof(Logger.Instance)}");
+
+Console.ReadLine();