// This sample code demonstrates "Initializers for auto-properties" feature of Roslyn 

//

// To try out other Roslyn features go to

// https://roslyn.codeplex.com/wikipage?title=Language%20Feature%20Status&referringTitle=Home

//

// C# samples PDF

// https://www.codeplex.com/Download?ProjectName=roslyn&DownloadId=824694

//

// VB.NET samples PDF

// https://www.codeplex.com/Download?ProjectName=roslyn&DownloadId=826498

​

using System;

using System.Linq;

​

public static class OverrideyBoi

{

    public static TResult Override<TResult, TObject>(this TObject o, Func<TObject, TResult> what, Func<TResult, TResult> with)

        where TObject : class

    {

        return with(what(o));

    }

}

​

public class Program

{   

    public class Options {

        public Func<int, bool, string> GivenIntAndBoolReturnString = (i, b) => i == 0 && b ? "YEP" : "NOPE";

        public Func<int, string> GivenIntReturnString = i => i == 1 ? "YEP" : "NOPE";

    }

    public static void Main()

    {

        var options = new Options();

        // Do something to options

        // options.Override(o => o.GivenIntAndBoolReturnString, original => (i, b) => original(i,b))

​

        Console.WriteLine(options.GivenIntAndBoolReturnString(0, true));

    }

}