Why is one d file compiled into two files object file & executable.

[jklp via Digitalmars-d-learn]

On Wednesday, 11 February 2015 at 05:08:16 UTC, Venkat Akkineni 
wrote:
> Hi
>
> I am coming from Java. What is the purpose of an object file & 
> why is it generated at compile time in addition to an 
> executable. I know C generates an object file too, but I don't 
> know what the use is.
>
> Please point me to any detailed documentation u may have 
> regarding object files.
>
> Also does D have any facilities for dynamic code generation & 
> compilation ?
>
> Thankyou
> Sincerely
> Venkat

It's not D-specific, every compiler for a compiled language 
produces objects:

http://en.wikipedia.org/wiki/Object_file