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

[Regan Heath via Digitalmars-d]

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.
>
> Maybe mixins might be a possibility.

Something like..

class Foo
{
   mixin(import("auto-generated.d"));
}

where auto-generated.d has class members/methods but no "class Foo" itself.


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.

C# also has partial methods which are essentially abstract methods with a  
compiler generated empty body.  They are not virtual as you cannot call a  
base.method() from method(), instead you optionally implement the method  
and if you don't it does nothing.  LINQ to SQL uses these for  
insert/update/delete events for each table in your database.

R

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