How to create instance of class that get data from 2 another instance?

[Suliman via Digitalmars-d-learn]

On Sunday, 4 January 2015 at 15:37:53 UTC, Suliman wrote:
> Ali, thanks for example, I understood it, but I am still can't 
> understand how to write code above without passing this as 
> parameter...


But now I think that possible is mess architecture of app if I 
meet such problem...