When I should create structures with new keywords?

[Adam D. Ruppe via Digitalmars-d-learn]

On Thursday, 26 January 2017 at 19:30:54 UTC, Suliman wrote:
> But I still not understand where the data is location in first 
> variant?

It is stored in the file itself. The File struct is pretty small, 
it just provides access to the contents of the file, it doesn't 
actually hold that content itself.