refRange with non copyable struct

[Jerry via Digitalmars-d-learn]

On Monday, 17 April 2017 at 18:07:36 UTC, Jonathan M Davis wrote:
> Non-copyable types tend to wreak havoc with things
> - Jonathan M Davis

Basicly what I use this for is to combine RAII with ranges.
Which I find quite useful when doing DB queries and the data is 
lazily fetched
since this allows me to guarantee that the query is "closed" and 
another query can take place.