How can I point an array to existing data in memory while using Better C?

[Stijn Herreman]

On Sunday, 8 July 2018 at 20:27:34 UTC, Stijn Herreman wrote:
> I should point out that I only have a vague idea of what I'm 
> doing, I tried things until it compiled and worked (at first 
> glance). If there are any docs that properly explain the 
> casting of pointers, I'd appreciate the links.

I found the following works as desired:

environment.d

     public __gshared header* GPT_header;
     public __gshared partition_entry* GPT_entries;

main.d

     GPT_header = cast(header*)0x00007e00;
     GPT_entries = cast(partition_entry*)0x00008000;

That still lets me access GPT_entries with an index, e.g. 
GPT_entries[0]. Is this how it's supposed to be done, or is there 
a better way still?