'partial' keyword in C# is very good for project , what's the same thing in D?

[FrankLike via Digitalmars-d]

On Wednesday, 29 October 2014 at 10:25:54 UTC, Regan Heath wrote:
> On Wed, 29 Oct 2014 07:54:39 -0000, Paulo  Pinto 
> <pjmlp at progtools.org> wrote:
>
>> On Wednesday, 29 October 2014 at 07:41:41 UTC, FrankLike wrote:
>>> Hello,everyone,
>>> I've written some projects  in  C#,find the 'partial' keyword 
>>> is very userful,which lets the auto codes in another single 
>>> file,my codes are very easy to update.
>>> But  what the same thing in D?
>>>
>>> Thank you,every one.
>>

> Partial classes are used in C# wherever you need to combine 
> auto-generated code and user code into a single class.  So, the 
> Windows GUI builder does it placing all the GUI component 
> construction and property setting in one file, and allowing the 
> user to only have to see/edit the application level code in 
> another file.  Likewise LINQ to SQL generates a custom 
> DataContext child class, and the user can optionally create a 
> 2nd file with the partial class to extend it.

> R

The same thing in D should be done,now.Otherwise，no big projects 
can be done like C#. Add another keyword,and update the compiler.

FrankLike