best way to memoize a range?

[Laeeth Isharc via Digitalmars-d-learn]

obviously it's trivial to do with a little aa cache.  and I know 
I can memoize a function, and turn the memoized version into an 
infinite range.  but suppose I have a lazy function that returns 
a finite range, and its expensive to calculate.

can I use Phobos to produce a memoized range?  So it will 
calculate on access to an element if it needs to, but will return 
the cached value if it has been calculated before.