lazy thoughts

[dsimcha]

== Quote from Sergey Gromov (snake.scaly at gmail.com)'s article
> Mon, 12 Jan 2009 09:05:18 -0800, Andrei Alexandrescu wrote:
> > Also, lazy evaluation has the risk of getting confusing as there's a lot
> > of escaping. Consider:
> >
> > int[] arr = [ 1, 2, 3, 4 ];
> > auto squares = map!("a * a")(arr);
> > arr[] = [ 5, 6, 7, 8 ];
> >
> > Now iterating squares will see different numbers than the original ones.
> This part bothers me.  Though it's hard to tell how much danger it would
> impose in practice.

I don't understand how this is any worse/more confusing than any other case of
having multiple aliases to the same memory region.