Interesting C# Features

[Syst3m_W1z4rd]

There is a lot interesting things here that can become useful, when you're making a source or server. What do you think about it?

Some things are common, but other thigns aren't.
You could of course find it on msdn, but this is really good and it's not normal features.



Thanks.

[Arco.]

var.
Absolutely love it.

[Syst3m_W1z4rd]

Originally Posted by Arco.

var.
Absolutely love it.

I have never used it really, but there is plenty of examples there with var haha. I can see some ways to use it.

I found this very interesting:
Unions (the C++ shared memory kind) in pure, safe C#

 Spoiler

Without resorting to unsafe mode and pointers, you can have class members share memory space in a class/struct. Given the following class:

[StructLayout(LayoutKind.Explicit)]
public class A
{
    [FieldOffset(0)]
    public byte One;

    [FieldOffset(1)]
    public byte Two;

    [FieldOffset(2)]
    public byte Three;

    [FieldOffset(3)]
    public byte Four;

    [FieldOffset(0)]
    public int Int32;
}

You can modify the values of the byte fields by manipulating the Int32 field and vice-versa. For example, this program:

static void Main(string[] args)
    {
        A a = new A { Int32 = int.MaxValue };

        Console.WriteLine(a.Int32);
        Console.WriteLine("{0:X} {1:X} {2:X} {3:X}", a.One, a.Two, a.Three, a.Four);

        a.Four = 0;
        a.Three = 0;
        Console.WriteLine(a.Int32);
    }

Outputs this:

2147483647
FF FF FF 7F
65535

just add using System.Runtime.InteropServices;