C#

<br />
screen.SplitVertical()<br />
   .Left.SplitHorizontal()<br />
      .Top.CreateRegion("region1")<br />
      .Bottom.CreateRegion("region2")<br />
   .Right.CreateRegion("main")<br />
   .Done();<br />

<br />
public interface ITop<X> { X Top { get; } }<br />
public interface IBottom<X> { X Bottom { get; } }<br />
public interface ILeft<X> { X Left { get; } }<br />
public interface IRight<X> { X Right { get; } }<br />
public interface ICreateRegion<X> { X CreateRegion(); }<br />
public interface ISplitVertical<X> { X SplitVertical(); }<br />
public interface ISplitHorizontal<X> { X SplitHorizontal(); }<br />
public interface IDone { void Done(); }<br />

<br />
public interface IBranch1<X> :<br />
    ICreateRegion<X>,<br />
    ISplitHorizontal<IBranch2<X>>,<br />
    ISplitVertical<IBranch3<x>> { }<br />
<br />
public interface IBranch2<X> :<br />
    ITop<IBranch1<IBottom<IBranch1<X>>>>, <br />
    IBottom<IBranch1<ITop<IBranch1<X>>>> { }<br />
<br />
public interface IBranch3<x> :<br />
    ILeft<IBranch1<IRight<IBranch1<X>>>>, <br />
    IRight<IBranch1<ILeft<IBranch1<X>>>> { }<br />
</x>

<br />
public static class Foo<br />
{<br />
    public static T FluentFactory<T><br />
    {<br />
        throw new NotImplementedException("Not yet implemented");<br />
    }<br />
<br />
    public static void Bar()<br />
    {<br />
        IBranch1<IDone> screen = FluentFactory<IBranch1<IDone>>();<br />
        <br />
        screen.Create().Done();<br />
<br />
        screen.SplitHorizontal()<br />
            .Top.Create()<br />
            .Bottom.Create()<br />
            .Done();<br />
<br />
        screen.SplitVertical()<br />
            .Left.Create()<br />
            .Right.Create()<br />
            .Done();<br />
<br />
        screen.SplitVertical()<br />
            .Left.SplitHorizontal()<br />
                .Top.Create()<br />
                .Bottom.Create()<br />
            .Right.Create()<br />
            .Done();<br />
    }<br />
}<br />
<br />
static class Program<br />
{<br />
    public delegate void Func();<br />
<br />
    private static void TryAndCatch(Func x)<br />
    {<br />
        try<br />
        {<br />
            x.Invoke();<br />
        }<br />
        catch (NotImplementedException e)<br />
        {<br />
            MessageBox.Show(e.Message);<br />
        }<br />
        catch (TypeLoadException e)<br />
        {<br />
            MessageBox.Show(e.Message);<br />
        }<br />
    }<br />
<br />
    [STAThread]<br />
    static void Main()<br />
    {<br />
        Application.EnableVisualStyles();<br />
        Application.SetCompatibleTextRenderingDefault(false);<br />
        TryAndCatch(Foo.Bar);<br />
}<br />

<br />
<br />
// all this is the same as first example<br />
public interface ITop<X> { X Top { get; } }<br />
public interface IBottom<X> { X Bottom { get; } }<br />
public interface ILeft<X> { X Left { get; } }<br />
public interface IRight<X> { X Right { get; } }<br />
public interface ICreateRegion<X> { X CreateRegion(); }<br />
public interface ISplitVertical<X> { X SplitVertical(); }<br />
public interface ISplitHorizontal<X> { X SplitHorizontal(); }<br />
public interface IDone { void Done(); }<br />
<br />
public interface IBranch1<X> :<br />
    ICreateRegion<X>,<br />
    ISplitHorizontal<IBranch2<X>>,<br />
    ISplitVertical<IBranch3<x>> { }<br />
<br />
// this is different<br />
    public interface IBranch2<X><br />
    {<br />
        IBranch1<IBottom<IBranch1<X>>> Top { get; }<br />
        IBranch1<ITop<IBranch1<X>>> Bottom { get; }<br />
    }<br />
<br />
    public interface IBranch3<x><br />
    {<br />
        IBranch1<IRight<IBranch1<X>>> Left { get; }<br />
        IBranch1<ILeft<IBranch1<X>>> Right { get; }<br />
    }<br />
</x>

<br />
class Error_codes<br />
        {<br />
            public string[] Error_category;<br />
            public int[] Error_value;<br />
            public string[] Error_comments;<br />
        }<br />

<br />
Error_codes[] error_details = new Error_codes[70];<br />
                        <br />
                        TextReader sr = File.OpenText(ErrorCodes_FILE_NAME);<br />
                        {<br />
                            string input=null;<br />
                            int i = 0;<br />
                            while ((input=sr.ReadLine())!=null) <br />
                            {<br />
                                Regex regEx = new Regex("#(\\w*)");<br />
                                string[] tokens = regEx.Split(input);<br />
                                error_details[i]= tokens[2].ToString();<br />
                                error_details[i] = 20; //int.Parse(tokens[3].ToString());<br />
                                error_details[i] = tokens[4].ToString();<br />
                                i++;<br />
                            }<br />
                            sr.Close();<br />
                        }<br />