file rawRead and rawWrite in chunks example

[Jay Norwood via Digitalmars-d-learn]

On Sunday, 9 August 2015 at 00:50:16 UTC, Ali Çehreli wrote:
>
>     {
>         auto f = File(fn,"wb");
>
>         iota(10.5, 20_000_010.5, 1.0)
>             .chunks(1000000)
>             .each!(a => f.rawWrite(a.array));
>     }
>
> Ali

Thanks. There are many examples of numeric to string data output 
in the docs, saving byLine.   Those are on the order of 30x 
slower than this rawWrite example.  This will be more useful to 
many people.