Code improvement for DNA reverse complement?

[ag0aep6g via Digitalmars-d-learn]

On 05/25/2017 10:41 PM, Ali Çehreli wrote:
> I would like to acknowledge you in the book hopefully with your real 
> name but if you don't want or care, I will use ag0aep6g. :)

Thanks, but I don't really care for the recognition. If anything, 
please use ag0aep6g.