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

[Dejan Lekic via Digitalmars-d]

On Wednesday, 29 October 2014 at 12:55:01 UTC, FrankLike wrote:
>
> 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.

This certainly made me laugh... I work on a very big project 
(Java / JBoss / Swing) and we do not use C#'s partial as Java 
does not have it. :) Even if it does we would not use it as we 
prefer our classes to be in a single file.

In D apps I work on I prefer all my classes in a single module, 
as is common "D way", or shall I call it "modular way"?