Add W2 D3 projects (not finished yet)

FormulatrixBootcamp.sln

@@ -71,6 +71,16 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NonGenericCollection", "W2
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Delegate", "W2 D2\Delegate\Delegate.csproj", "{8CBF3A9D-D792-4ECC-92A3-0E2782673234}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DelegatePubSub", "W2 D2\DelegatePubSub\DelegatePubSub.csproj", "{22303F7C-8C80-4381-AA31-D1A260E37F2F}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DelegateReturnValue", "W2 D2\DelegateReturnValue\DelegateReturnValue.csproj", "{48A4309F-4E43-419D-8ECD-E8A441359E83}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "W2 D3", "W2 D3", "{82AE1F6C-47FF-4067-89F3-87EBEFDA524C}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EventHandler", "W2 D3\EventHandler\EventHandler.csproj", "{D5027177-A81C-44F1-9F12-7C7CDFB6C458}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EventHandlerGeneric", "W2 D3\EventHandlerGeneric\EventHandlerGeneric.csproj", "{6A2EF45B-F734-4A5F-8D67-90443EB39056}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -189,6 +199,22 @@ Global
 		{8CBF3A9D-D792-4ECC-92A3-0E2782673234}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{8CBF3A9D-D792-4ECC-92A3-0E2782673234}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{8CBF3A9D-D792-4ECC-92A3-0E2782673234}.Release|Any CPU.Build.0 = Release|Any CPU
+		{22303F7C-8C80-4381-AA31-D1A260E37F2F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{22303F7C-8C80-4381-AA31-D1A260E37F2F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{22303F7C-8C80-4381-AA31-D1A260E37F2F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{22303F7C-8C80-4381-AA31-D1A260E37F2F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{48A4309F-4E43-419D-8ECD-E8A441359E83}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{48A4309F-4E43-419D-8ECD-E8A441359E83}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{48A4309F-4E43-419D-8ECD-E8A441359E83}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{48A4309F-4E43-419D-8ECD-E8A441359E83}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D5027177-A81C-44F1-9F12-7C7CDFB6C458}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D5027177-A81C-44F1-9F12-7C7CDFB6C458}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D5027177-A81C-44F1-9F12-7C7CDFB6C458}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D5027177-A81C-44F1-9F12-7C7CDFB6C458}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6A2EF45B-F734-4A5F-8D67-90443EB39056}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6A2EF45B-F734-4A5F-8D67-90443EB39056}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6A2EF45B-F734-4A5F-8D67-90443EB39056}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6A2EF45B-F734-4A5F-8D67-90443EB39056}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -222,5 +248,9 @@ Global
 		{367138CF-7021-4354-B364-6A674AA8E4D5} = {747633C8-D663-4492-9F60-E01A9F09A1CA}
 		{51504E3A-4A98-45D9-B64B-C657E7CC95B9} = {747633C8-D663-4492-9F60-E01A9F09A1CA}
 		{8CBF3A9D-D792-4ECC-92A3-0E2782673234} = {747633C8-D663-4492-9F60-E01A9F09A1CA}
+		{22303F7C-8C80-4381-AA31-D1A260E37F2F} = {747633C8-D663-4492-9F60-E01A9F09A1CA}
+		{48A4309F-4E43-419D-8ECD-E8A441359E83} = {747633C8-D663-4492-9F60-E01A9F09A1CA}
+		{D5027177-A81C-44F1-9F12-7C7CDFB6C458} = {82AE1F6C-47FF-4067-89F3-87EBEFDA524C}
+		{6A2EF45B-F734-4A5F-8D67-90443EB39056} = {82AE1F6C-47FF-4067-89F3-87EBEFDA524C}
 	EndGlobalSection
 EndGlobal

W2 D2/DelegatePubSub/DelegatePubSub.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

W2 D2/DelegatePubSub/Program.cs

@@ -0,0 +1,15 @@
+using DelegatePubSub;
+public delegate void Publish(string x);
+public class Program 
+{
+	static void Main() 
+	{
+		Youtuber yt = new();
+		Subscriber sub1 = new();
+
+		yt.AddSubscriber(sub1.Notify);
+		yt.SendNotification();
+
+		yt.RemoveSubscriber(sub1.Notify);
+	}
+}

W2 D2/DelegatePubSub/Subscriber.cs

@@ -0,0 +1,8 @@
+namespace DelegatePubSub;
+public class Subscriber
+{
+    public void Notify(string message) 
+    {
+    	Console.WriteLine(message);
+    }
+}

W2 D2/DelegatePubSub/Youtuber.cs

@@ -0,0 +1,35 @@
+namespace DelegatePubSub;
+public class Youtuber
+{
+	private Publish? _sub;
+	public void SendNotification() 
+	{
+		if (_sub != null) 
+		{
+			_sub.Invoke("Notify");
+		}
+	}
+
+	public void AddSubscriber(Publish sub) 
+	{
+		if (_sub == null || !_sub.GetInvocationList().Contains(sub)) 
+		{
+			_sub += sub;
+		}
+		else 
+		{
+			Console.WriteLine("Error: Subscriber already exist.");
+		}
+	}
+
+	public void RemoveSubscriber(Publish sub) 
+	{
+		if (_sub != null) 
+		{
+			_sub -= sub;
+		} else 
+		{
+			Console.WriteLine("Error: No subscriber.");
+		}
+	}
+}

W2 D2/DelegateReturnValue/DelegateReturnValue.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

W2 D2/DelegateReturnValue/Program.cs

@@ -0,0 +1,43 @@
+public delegate decimal Calculator(decimal a, decimal b);
+public class Program {
+	static void Main() 
+	{
+		Calculator calc = Add;
+		calc += Subtract;
+		calc += Multiply;
+		calc += Divide;
+
+		Delegate[] del = calc.GetInvocationList();
+		List<decimal> results = new List<decimal>();
+
+		foreach (Calculator d in del) 
+		{
+			results.Add(d.Invoke(5.1M, 5.1M));
+		}
+
+		foreach (decimal result in results) 
+		{
+			Console.WriteLine(result);
+		}
+	}
+
+	static decimal Add(decimal a, decimal b) 
+	{
+		return a + b;
+	}
+
+	static decimal Subtract(decimal a, decimal b) 
+	{
+		return a - b;
+	}
+
+	static decimal Multiply(decimal a, decimal b) 
+	{
+		return a * b;
+	}
+
+	static decimal Divide(decimal a, decimal b) 
+	{
+		return a / b;
+	}
+}

W2 D2/EventHandler/EventHandler.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

W2 D2/EventHandler/Program.cs

@@ -0,0 +1,2 @@
+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

W2 D3/EventHandler/EventHandler.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

W2 D3/EventHandler/Program.cs

@@ -0,0 +1,12 @@
+using EventHandlerExample;
+public class Program 
+{
+	static void Main() 
+	{
+		Youtuber yt1 = new Youtuber("Windah Basudara");
+		Subscriber sub1 = new Subscriber("Yusuf");
+
+		yt1.AddSubscriber(sub1.GetNotification);
+		yt1.UploadVideo();
+	}
+}

W2 D3/EventHandler/Subscriber.cs

@@ -0,0 +1,16 @@
+namespace EventHandlerExample;
+public class Subscriber
+{
+	private string? _name;
+
+	public Subscriber(string name) 
+	{
+		_name = name;
+	}
+
+	public void GetNotification(object? sender, EventArgs e) 
+	{
+
+		Console.WriteLine($"{_name} is getting notification from Youtuber ({sender}).");
+	}
+}

W2 D3/EventHandler/Youtuber.cs

@@ -0,0 +1,54 @@
+namespace EventHandlerExample;
+public class Youtuber
+{
+	private EventHandler? _sub;
+	private string _name;
+
+	public Youtuber(string name) 
+	{
+		_name = name;
+	}
+
+	public void AddSubscriber(EventHandler sub) 
+	{
+		if (_sub == null || !_sub.GetInvocationList().Contains(sub)) 
+		{
+			_sub += sub;
+		}
+		else 
+		{
+			Console.WriteLine("Error: Subscriber already exist.");
+		}
+	}
+
+	public void RemoveSubscriber(EventHandler sub) 
+	{
+		if (_sub != null) 
+		{
+			_sub -= sub;
+		}
+		else 
+		{
+			Console.WriteLine("Error: No subscriber.");
+		}
+	}
+
+	public void UploadVideo() 
+	{
+		Console.WriteLine("Video is being uploaded..");
+		Console.WriteLine("Video uploaded.");
+		SendNotification();
+	}
+
+	private void SendNotification() 
+	{
+		if (_sub != null) 
+		{
+			_sub.Invoke(this, EventArgs.Empty);
+		}
+	}
+    public override string ToString()
+    {
+        return _name;
+    }
+}

W2 D3/EventHandlerGeneric/EventData.cs

@@ -0,0 +1,6 @@
+namespace EventHandlerGeneric;
+public class EventData : EventArgs
+{
+	public string? message;
+	public int viewCount;
+}

W2 D3/EventHandlerGeneric/EventHandlerGeneric.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

W2 D3/EventHandlerGeneric/Program.cs

@@ -0,0 +1,16 @@
+using EventHandlerGeneric;
+
+public class Program 
+{
+	static void Main() 
+	{
+		Youtuber yt = new Youtuber("Windah Basudara");
+		Subscriber sub1 = new Subscriber("Yusuf");
+
+		yt.AddSubscriber(sub1.GetNotification);
+		yt.UploadVideo("Game Horror");
+
+		yt.AddViewCount(sub1.WatchVideo);
+
+	}
+}

W2 D3/EventHandlerGeneric/Subscriber.cs

@@ -0,0 +1,27 @@
+namespace EventHandlerGeneric;
+public class Subscriber
+{
+	private string? _name;
+	EventData data = new();
+
+	public Subscriber(string name) 
+	{
+		_name = name;
+	}
+
+	public void WatchVideo(object? sender, EventData e) 
+	{
+		Console.WriteLine($"{_name} is watching youtube video");
+		data.viewCount += 1;
+	}
+
+	public void GetNotification(object? sender, EventData e) 
+	{
+		Console.WriteLine(e.message);
+	}
+
+	// public void GetViewCount(object? sender, EventData e) 
+	// {
+	// 	Console.WriteLine($"Youtube view count: {e.viewCount}");
+	// }
+}