How to break module into multiple file.

[Nick Sabalausky]

"Matthew Ong" <ongbp at yahoo.com> wrote in message 
news:ir3801$84b$1 at digitalmars.com...
> On 5/14/2011 3:17 AM, Nick Sabalausky wrote:
>> "Jason House"<jason.james.house at gmail.com>  wrote in message
>
> > But yea, one-class-per-file is really a Java thing (and then a few other
> Not true entirely, the limit is one public class per file. There is no 
> actual limit for such:
> // The file must be ClassA.java
>
> public class ClassA{}
>
> class ClassB1{}
> class ClassB2{}
> class ClassB3{}
> class ClassB4{}...
>
>

I see. But in any case, D allows multiple public classes in one file, FWIW.


> > languages kind of ape'd it.). No need to force youself into that in D.
>
> As for the real reason it is for:
> That current D layout seem to limit that one file to a single developer. 
> Instead of multiple classes by multiple developers within the same module.
>
> Using the example:
> HashMap & Unit tested implemented by matthew
> LinkedList & Unit tested implemented by john
> but the same module is handled by Jonathan for other classes?
>

That's what version control systems are for. As long as you're using a VCS 
that isn't terrible (ie, as long as you're not using CVS or Visual 
SourceSafe), than it's easy for multiple people to edit the same source 
file.


> But Nick,
> -- ...to this: ---
>
> // libfoo/all.d
> module libfoo.all;
> public import libfoo.partA;
> public import libfoo.partB;
> public import libfoo.partC;
>
> That does the trick.

Great :)

> Now my only concern is that when does D linked like C++ or dynamic 
> selective linked on import that is ONLY really used and not linked ALL 
> that is imported....Such thing does not happen in Java because linking is 
> done during runtime by Class Loader. I wonder the loader in D for DLL is 
> as intelligent.
>

AIUI, automatic DLL loading is handled by windows, not D (but I think you 
can also load DLLs manually). Also, D is usually linked statically, not 
dynamically. I know it's possible for a static linker to eliminate code 
that's not used, but I don't think OPTLINK (D's linker on windows) currently 
does it.