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rdrake

Tue Sep 04, 2007 10:26 pm


C# Delegates

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Fun stuff:
using System;

class Program
{
    delegate double multiplyByTwo(double value);

    public static void Main()
    {
        multiplyByTwo mbt = delegate(double value)
        {
            return value * 2;
        };

        Console.WriteLine(mbt(2.0));
    }
}Shows an example of an anonymous method as well.

As you might have guessed, it outputs 4.


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wtd

Wed Sep 05, 2007 12:47 am


RE:C# Delegates

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I don't have access to Mono 1.2.5 at the moment, but would the following work?

using System;

class Program
{
    delegate double multiplyByTwo(double value);

    public static void Main()
    {
        multiplyByTwo mbt = v: double => v * 2;

        Console.WriteLine(mbt(2.0));
    }
}


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rdrake

Wed Sep 05, 2007 11:17 am


RE:C# Delegates

-----------------------------------

With some minor modifications it will work under C# 3.0:

using System;

class Program
{
    delegate double multiplyByTwo(double value);

    public static void Main()
    {
        multiplyByTwo mbt = (v) => v * 2;

        Console.WriteLine(mbt(2.0));
    }
}C# 2.0 lacks the ability to make use of implicitly typed parameters.