Extension Methods in C# 3.0

This is actually "old stuff" today - but it is really cool: extension methods in C# 3.0 and mixins!

Ever wanted to raise a double to the power of another double without having to go like:

Math.Pow(10.343, 302.34);

?

Well, what do you say for that:

(10.343).RaiseToPower(302.34);

That would be very nice, and... it is possible, as long as:

you are using C# 3.0

you have implemented an extension method like this:

    public static class Powerade
    {
        public static double RaiseToPower(this double x, double y)
        {
            return Math.Pow(x, y);
        }
    }

This is of course a quite useless example, but what extension methods are in essence is a way to implement mixins in C# 3.0: you can "mix in" some functionality to a type that is already there.

More on mixins soon.