C#

Christian Graus wrote:

target.Character and target.passableBy will work, because the anonymous method has the scope of the spot it was created

public class Thing
{
   public event EventHandler Touched;

   public void Touch()
   {
      //...
      if (Touched != null) Touched(this, EventArgs.Empty);
   }
}


public class OtherThing
{
   List<Thing> Things = App.GetThings(); // Assume we have things...
   public void Foo() 
   {
      foreach (Thing t in Things)
        t.Touched += new EventHandler(thing_touched);
   }

   static void thing_touched(object sender, EventArgs e)
   {
      Thing source = (Thing)sender;
      // ... work with the Thing ...
   }
}

public void init()
{
  int i = 30;
  foo(delegate()
  {
    i = 10;
  });
  Console.WriteLine("i = " + i.ToString());
  Console.ReadKey();
}

public void foo(EventHandler awesome)
{
  awesome();
}

using System;
using System.Collections.Generic;
using System.Text;

namespace test2
{
    class Program
    {
        static void Main(string[] args)
        {
            Thing1 thing1 = new Thing1();
            Thing2 thing2 = thing1.Get2();
            thing1 = null;
            GC.Collect(); // Force Garbage Collection to be sure that thing1 doesn't exist anymore.
            thing2.awesome(null, null);
            return;
        }
    }

    public class Thing1
    {
        public Thing2 Get2()
        {
            Thing2 thing2 = new Thing2();
            thing2.awesome = delegate(object sender, EventArgs args)
            {
                thing2 = null;
            };
            return thing2;
        }
    }

    public class Thing2
    {
        public EventHandler awesome;
    }
}

public Form1()
{
    InitializeComponent();
    for (int i = 0; i < 5; i++)
    {
        Button b = new Button() { Text = "button" + i, Top = 30*(i+1), Left = 50 };
        Controls.Add(b);
        b.Click += delegate(object sender, EventArgs e)
        {
            MessageBox.Show("variable i (scoped to Form1 constructor!) = " + i);
        };
    }
}

Narvius wrote:

Don't manually shift around stuff, *ever*.