How to organize using modules?

[TheFlyingFiddle]

On Tuesday, 31 December 2013 at 06:01:21 UTC, Afshin wrote:
> Is it possible to describe modules in terms of packages (as 
> found in Java)?
>
> The features that Java packages have that I can't seem to get 
> in D are:
> 1) You can have classes that are in the same package, but kept 
> in separate files.
> 2) You can import many classes using the '*' syntax.
>
> Is this possible in D?
>
> What I understand is that if I have ClassA and ClassB in 
> Module1, and I want to keep the classes in separate files, then 
> I have to use the following module statements:
>
> in ClassA:
> module Module1.ClassA;
>
> in ClassB:
> module Module1.ClassB;
>
> But now it becomes cumbersome to use the classes because now I 
> have to import them explicitely:
>
> import Module1.ClassA;
> import Module1.ClassB;
>
>
>
> If I wanted to use:
> import Module1;
>
> Then it seems I have to have ClassA and ClassB in the same D 
> file.
>
> Am I missing something?


It is possible if you have your file system set up like this.

Module1
     -ClassA.d
     -ClassB.d
     -package.d

//In Module1/ClassA.d
module Module1.ClassA;
class ClassA { ... }

//In Module1/ClassB.d
module Module1.ClassB;
class ClassB { ... }

//In Module1/package.d
module Module1;

public import Module1.ClassA;
public import Module1.ClassB;


//In main.d

module main;

import Module1; //This will import both ClassA and ClassB.

Very important! The name of the file with the public imports must 
be package.d