Official Announcement: 'Learning D' is Released

[jmh530 via Digitalmars-d-announce]

On Tuesday, 12 January 2016 at 21:10:28 UTC, John Colvin wrote:
>
> When you want to have control over the process of loading a 
> library e.g. if you want it to be an optional dependency at 
> runtime.

I've seen the example in the book. I'm just not sure why you 
would want an optional runtime dependency.