http://tirania.org/blog/

If you can afford building two or three UIs · Banshee Amazon MP3 Store Screencast!

class MessageLogger {
public:
	MessageLogger (const char *domain);
	void LogMessage (const char *msg);
}

/* bridge.cpp, compile into bridge.so */
MessageLogger *Construct_MessageLogger (const char *msg)
{
	return new MessageLogger (msg);
}

void LogMessage (MessageLogger *logger, const char *msg)
{
	logger->LogMessage (msg);
}

class MessageLogger {
	IntPtr handle;

	[DllImport ("bridge")]
	extern static IntPtr Construct_MessageLogger (string msg);

	public MessageLogger (string msg)
	{
		handle = Construct_MessageLogger (msg);
	}

	[DllImport ("bridge")]
	extern static void LogMessage (IntPtr handle, string msg);

	public void LogMessage (string msg)
	{
		LogMessage (handle, msg);
	}
}

class Widget {
public:
	void SetVisible (bool visible);
	virtual void Layout ();
	virtual void Draw ();
};

class Label : public Widget {
public:
	void SetText (const char *text);
	const char *GetText ();
};

__ZN6Widget10SetVisibleEb
__ZN6Widget6LayoutEv
__ZN6Widget4DrawEv
__ZN5Label7SetTextEPKc
__ZN5Label7GetTextEv

	Label *l = new Label ();
	l->SetText ("foo");
	l->Draw ();	

	Label *l = (Label *) malloc (sizeof (Label));
	ZN5LabelC1Ev (l);   // Mangled name for the Label's constructor
	_ZN5Label7SetTextEPKc (l, "foo");

	// This one calls draw
	(l->vtable [METHOD_PTR_SIZE*2])();

kSecReturnData
	[DllImport ("libc")]
	void system (string command);
	[...]

	system ("ls -l /");

	public sealed class AddTwo {
		public int Add (int a, int b)
		{
			return a + b;
		}

		public async IAsyncOperation SubAsync (int a, int b)
		{
			return a - await (CountEveryBitByHand (b));
		}
	}

	// Java code
	button.setOnClickListener (new View.OnClickListener() {
             public void onClick(View v) {
		button.setText ("Times clicked: " + Integer.toString(counter));
             }
         });

	// C# code
	button.Click += delegate {
		button.Text = "Times clicked: " + counter;
	};

void OnSettingsTapped ()
{
	var settings = new SettingsViewController ();
	PushViewController (settings, true);
}

void OnSettingsTapped ()
{
	var intent = new Intent ();
	intent.SetClass (this, typeof (SettingsActivity));
	StartActivity (intent);
}

		// This code:
		using Mono.Simd;

		Vector4f Add (Vector4f one, Vector4f two)
		{
			return one + two;
		}

		// Is inlined by our LLVM code generator when invoked
		// with the two statics first and second:
		mov    first,%eax
		movups (%eax),%xmm0
		mov    second,%eax
		movups (%eax),%xmm1
		addps  %xmm1,%xmm0

csharp> class Demo {
      >     public int Add (int a, int b)
      >     {
      >          return a + b;
      >     }
      > }
csharp> new Demo ().Add (1, 3);
4
csharp>

bash$ cat demo.cs
#!/usr/bin/csharp
class Demo {
	public dynamic Add (dynamic a, dynamic b)
	{
		return a + b;
	}
}
Console.WriteLine (new Demo ().Add ("this is", " cute"));
bash$ chmod +x demo.cs
bash$ ./demo.cs
this is cute
bash$

using Mono.CSharp;
using System;

class Runner {
	static int Main (string [] args)
	{
		var r = new Report (new ConsoleReportPrinter ());
		var cmd = new CommandLineParser (r);

		var settings = cmd.ParseArguments (args);
		if (settings == null || r.Errors > 0)
			Environment.Exit (1);

		var evaluator = new Evaluator (settings, r);

		evaluator.Run ("class Demo { public static int Add (int a, int b) { return a+b; }}");
		evaluator.Run ("print (Demo.Add (1,2));");
		return 0;
	}
}
	//
	class MyElement : public UIElement {
	  protected:
		MyElement ();
	  private:
	        // fields and methods for MyElement go here
	}

	public class DependencyObject {
		// Points to the C++ instance.
		IntPtr _native;
	}

	// Our entire hierarchy exposed to managed code
	// derives from EventObject
	class EventObject {
        	GCHandle managed_handle;
	}

MoonlightView
IList  pilots = db.Query  (delegate(Pilot pilot) {
	return pilot.Points == 100;
});

       Heap shot 5 at 14.518 secs: size: 43684432, object count: 562907, class count: 543
            Bytes      Count  Average Class name
         10506984      87373      120 System.Collections.Hashtable.Slot[] (bytes: +1939272, count: +16161)
               87346 references from: System.Collections.Hashtable
          8130304      87486       92 System.Int32[] (bytes: +1706912, count: +16164)
               87346 references from: System.Collections.Hashtable
               40 references from: System.Collections.Generic.Dictionary
               30 references from: System.Globalization.NumberFormatInfo
          6846000      57050      120 System.Web.Caching.CacheItem (bytes: +1232880, count: +10274)
          4891432      87347       56 System.Collections.Hashtable (bytes: +904176, count: +16146)
               28526 references from: System.Web.HttpStaticObjectsCollection
               28525 references from: System.Threading.ReaderWriterLock
               28524 references from: System.Web.SessionState.SessionStateItemCollection
          1597344      28524       56 System.Web.SessionState.InProcSessionItem (bytes: +287672, count: +5137)
               28524 references from: System.Web.Caching.CacheItem
          1597344      28524       56 System.Web.SessionState.SessionStateItemCollection (bytes: +287616, count: +5136)
               28524 references from: System.Web.SessionState.InProcSessionItem

	This heapshot was taken 14.518 seconds after application startup, at the
	time there were 562907 objects in the heap, of 543 different types,
	using about 43 MB of memory.

mono --gc=sgen
mono-sgen
	toshok: oh man… chicken tikka masala burrito
	toshok: i got it to share with conchita, but she's asleep on the couch...

	toshok: it's so good, i might eat it all

$ gmcs.exe
mono$ gmcs missing.cs
error CS2001: Source file `missing.cs' could not be found
Compilation failed: 1 error(s), 0 warnings

mono$ MONO_ENV_OPTIONS=--trace=E:all gmcs missing.cs[0xb75136f0:] EXCEPTION handling: System.IO.FileNotFoundException: Could not find file "missing.cs".

"{unnamed thread}" tid=0x0xb75136f0 this=0x0x53f18 thread handle 0x403 state : not waiting owns ()
  at System.IO.FileStream..ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare,int,bool,System.IO.FileOptions) {0x00619}
  at System.IO.FileStream..ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare) {0x00022}
  at (wrapper remoting-invoke-with-check) System.IO.FileStream..ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare) {0x0004f}
  at System.IO.File.OpenRead (string) {0x0002c}
  at Mono.CSharp.Driver.Parse (Mono.CSharp.CompilationUnit) {0x00016}
  at Mono.CSharp.Driver.Parse () {0x00068}
  at Mono.CSharp.Driver.Compile () {0x00098}
  at Mono.CSharp.Driver.Main (string[]) {0x000a2}
  at (wrapper runtime-invoke) {Module}.runtime_invoke_int_object (object,intptr,intptr,intptr) {0x00033}
error CS2001: Source file `missing.cs' could not be found
Compilation failed: 1 error(s), 0 warnings

file@2x.ext
file.ext
	texture = UIImage.FromBundle ("Images/texture.png");

	UIGraphics.BeginImageContext (new SizeF (100, 100));

	UIGraphics.BeginImageContextWithOptions (SizeF size, bool opaque, float scale);

	void BeginImageContext (SizeF size)
	{
		if (Graphics.HighRes)
			UIGraphics.BeginImageContextWithOptions (size, false, 0);
		else
			UIGraphics.BeginImageContext (size);
	}

We are moving our source code repository to GitHub.

On July 22nd ~9am EDT (1300 GMT) the subversion repository at "svn
+ssh://mono-cvs.ximian.com/source" will be set to read-only mode and
kept that way forever.

We estimate that the process of migrating all the projects and moving
them to GitHub will take more than 3 and less than 8 hours. Once it is
completed we will send an email to this list with URLs to the new
repositories, FAQs,...

	$ export MONO_ENV_OPTIONS="--llvm --gc=sgen"
	$ make

	var request = (HttpWebRequest) WebRequest.Create (uri);
	request.AutomaticDecompression = DecompressionMethods.GZip;

	[Conditional ("DEBUG")]
	void Log (string format, params object [] args)
	{
		Console.WriteLine (String.Format (format, args));
	}

dynamic
<script language="csharp">
from email in documents.ElementsByTag ("email")
	email.Style.Font = "bold";
</script>

<script language="csharp" source="ImageGallery.cs"></script>

<script language="cil" source="MailApp.dll"></script>

csharp.exe
Mono.CSharp.dll
System.Type
Mono.CSharp.TypeSpec
System.Type
System.Type
TypeSpec
MemberCache
csharp
csharp
csc.exe
	csharp> using System.Linq;
	csharp> from x in "Foo" select x;

Mono.CSharp.Evaluator
csharp
mcs/tools/csharp
Mono.CSharp
csharp
	[BaseType (typeof (NSCell))]
	interface NSActionCell {
		[Export ("initTextCell:")]
		IntPtr Constructor (string aString);

		[Export ("initImageCell:")]
		IntPtr Constructor (NSImage  image);

		[Export ("target")]
		NSObject Target  { get; set; }

		[Export ("action")]
		Selector Action  { get; set; }

		[Export ("tag")]
		int Tag  { get; set; }

	}

class TwitterConfig {
    [Section ("Account")]
      [Entry] string Username;
      [Password] string Password;

   [Section ("Settings")]
      bool AutoRefresh;
      bool AutoLoad;
      bool UseTwitterRetweet;
}
var root = new RootElement ("Settings") {
  new Section (){
    new BooleanElement ("Airplane Mode", false),
  new RootElement ("Notifications", 0, 0) { Notifications }
  new Section (){
    new RootElement ("Sound"), { Sound },
    new RootElement ("Brightness"){ Brightness },
    new RootElement ("Wallpaper"){ Wallpaper }
  },
  new Section () {
    new EntryElement ("Login", "Your login name", "miguel"),
    new EntryElement ("Password", "Your password", "password", true),
    new DateElement ("Select Date", DateTime.Now),
    new TimeElement ("Select Time", DateTime.Now),
  }
}

var dv = new DialogViewController (root);
navigation.PushViewController (dv, true);

class AccountInfo {
    [Section]
    public bool AirplaneMode;

    [Section ("Data Entry", "Your credentials")]

    [Entry ("Enter your login name")]
    public string Login;

    [Caption ("Password"), Password ("Enter your password")]
    public string passwd;

    [Section ("Travel options")]
    public SeatPreference preference;
}

new RootElement ("Settings") {
  new Section (){
    new BooleanElement ("Airplane Mode", false),
    new RootElement ("Notifications", 0, 0) { Notifications }
  new Section (){
    new RootElement ("Sound"), { Sound },
    new RootElement ("Brightness"){ Brightness },
    new RootElement ("Wallpaper"){ Wallpaper }
  },
  new Section () {
    new EntryElement ("Login", "Your login name", "miguel"),
    new EntryElement ("Password", "Your password", "password", true),
    new DateElement ("Select Date", DateTime.Now),
    new TimeElement ("Select Time", DateTime.Now),
  }
}

public class FavoritesViewController : DialogViewController {
  public FavoritesViewController () : base (null) { }

  public override void ViewWillAppear (bool animated)
  {
    var favs = AppDelegate.UserData.GetFavoriteCodes();
    Root = new RootElement ("Favorites") {
      from s in AppDelegate.ConferenceData.Sessions
        where favs.Contains(s.Code)
        group s by s.Start into g
        orderby g.Key
        select new Section (MakeCaption ("", g.Key)) {
          from hs in g
            select (Element) new SessionElement (hs)
        }
    };
  }
}

/var/log/secure
	MOONLIGHT_OVERRIDES=effects=no firefox

	public class Tuple<T1, T2> {
		public Tuple (T1 v1, T2 v2);
		T1 Item1 { get; set; }
		T2 Item2 {get; set; }
	}

	(user, password, host, port, path) = ParseUri (url);

	Tuple<string, string, string, int, string> ParseUri (string url);

	(section, header) = my_array;

	(query, page, other_options) = Request.QueryString;

	ParseUri ()
	{
		...
		return (user, password, host, port, path);
	}

	using (var (image, audio, badge) = iphoneApp.GetNotifications ()){
	    // use IDisposable image
	    // use IDisposable audio
	    // use trivial int badge
	}

	var a = 'Hello {name} how are you?';

	var a = String.Format ("Hello {0} how are you?", name);

	var a = 'There are {list.Count} elements';

	var a = 'The {(from x in args where x.StartsWith ("a") select x).FirstOrDefault ()} arguments';

	var a = $"There are {list.Count} elements";
	var greeting = $"Hello {name} how are you?";

When	Event	Speaker
Sunday 2010-02-07
Sun 09:00-09:15	Opening	Stéphane Delcroix, Ruben Vermeersch
Sun 09:15-10:00	MonoDevelop	Lluis Sanchez Gual
Sun 10:00-11:00	The Ruby and .NET love child	Ivan Porto Carrero
Sun 11:00-12:00	Mono Edge	Miguel de Icaza
Sun 12:45-13:15	The evolution of MonoTorrent	Alan McGovern
Sun 13:15-13:45	Image processing with Mono.Simd	Stéphane Delcroix
Sun 13:45-14:15	ParallelFx, bringing Mono applications in the multicore era	Jérémie Laval
Sun 14:30-15:30	Building The Virtual Babel: Mono In Second Life	Jim Purbrick
Sun 15:30-16:00	Moonlight and you	Andreia Gaita
Sun 16:00-16:30	OSCTool - learning C# and Mono by doing	Jo Shields
Sun 16:30-16:45	Smuxi - IRC in a modern environment	Mirco Bauer
Sun 16:45-17:00	Closing	Stéphane Delcroix, Ruben Vermeersch

09:00 - 09:15	Opening (Ruben Vermeersch, Stéphane Delcroix)
09:15 - 10:00	MonoDevelop (Lluis Sanchez Gual)
10:00 - 11:00	The Ruby and .NET love child (Ivan Porto Carrero)
11:00 - 12:00	Mono Edge (Miguel de Icaza)
Lunch Break
12:45 - 13:15	The evolution of MonoTorrent (Alan McGovern)
13:15 - 13:45	Image processing with Mono.Simd (Stéphane Delcroix)
13:45 - 14:15	ParallelFx, bringing Mono applications in the multicore era (Jérémie Laval)
Coffee Break
14:30 - 15:30	Building The Virtual Babel: Mono In Second Life (Jim Purbrick)
15:30 - 16:00	Moonlight and you (Andreia Gaita)
16:00 - 16:30	OSCTool - learning C# and Mono by doing (Jo Shields)
16:30 - 16:45	Smuxi - IRC in a modern environment (Mirco Bauer)
16:45 - 17:00	Closing (Ruben Vermeersch, Stéphane Delcroix)

Xamarin

C# Everywhere

Sony PSSuite - Powered by Mono

Google Native Client

Mono 2.10

Mono on Android

Mono on iOS

Phalanger

CXXI

Compiler as a Service

Unity3D

Microsoft

MonoDevelop

SGen

XNA and Mono: MonoGame

Gtk+

Hosting Bills

Some Key Quotes

Mono on Mainframes

Mono and ASP.NET

2012, the year of Mono 2.12

ECMA

The Alternatives

How CXXI Works

Demos

Future Work

What did CodeSearch do for programmers?

Comparing Search Engines

First Contender: GrepCode

Second Contender: Codease

Third Contender: Koders

Google's CodeSearch

Is there a hacker White Knight out there?

Thanks!

New Features in Mono 2.11

Head-less WinRT

The Basics

WinRT

WinRT Projections

Asynchronous APIs

Is it .NET or Not?

Creating WinRT Components

UI Programming

In Short

Xamarin at BUILD

Comments

The Basics

Unix Boot Camp

Learn Emacs

Tooting my own horn

Becoming a Power User

Mavis Beacon

Classics

On C# 5.0

Roadmaps

Next Steps

Where we are now

Fighting for Your Right to Party

Next Steps

Mono for Android

APIs

Core Differences

Native User Interfaces

Linking

Mono for Android References

Thank You!

New Hardware Accelerated Framework

Getting the Code

Some Games

A New Generation of Game Developers

Helping Game Developers

Hot Topics

WPF: A Recurring Topic

Multiple Compiler Instances

Testers Wanted

Silverlight

Why you are not getting laid

You are doing it wrong

Range of Action

Dealing with the Well Actually crowd