joiner: How to iterate over immutable ranges?

[Mike Parker via Digitalmars-d-learn]

On Sunday, 14 February 2016 at 19:32:31 UTC, Bastiaan Veelo wrote:

> Thanks. I didn't know that iterating a range means mutating its 
> contents. I still don't quite get it, and it is probably 
> because I don't fully understand ranges. I think what confuses 
> me the most is their analogy to containers. It's no problem to 
> iterate over a container of immutable data, but it is for a 
> range.


Maybe this [1] will help shed some light.

[1] https://www.packtpub.com/books/content/understanding-ranges