making a really simple dll.

[Trass3r]

> I looked at the dll documentation and I'm baffled by the time I get to  
> the first
> line: __gshared HINSTANCE g_hInst; and then it starts talking about
> dll_process_attach. I don't want to attach processes, I want to compute  
> an integer.

The Dllmain is needed so the D runtime is properly initialized.
Just copy the code http://www.d-programming-language.org/dll.html into a  
dllmain.d and put your actual code in other modules.
You don't need to do the EXPORTS shit in the .def file though, just use  
the export keyword.