So how exactly does one make a persistent range object?

[Andrej Mitrovic]

On 6/6/11, Jonathan M Davis <jmdavisProg at gmx.com> wrote:
> I really don't think that Andrei was thinking that people would need to save
> ranges when he started internalizing all of the range types in std.range and
> std.algorithm.

There are some classes like InputRangeObject defined in std.range that
might be used to store a general-purpose range, but they're annotated
with some comments about various bugs they have. I gave that a try a
while ago, but it's a pain to make it work at all.

Well.. D is a very compile-time-oriented language, as opposed to one
that's focused more on runtime features. Nothing bad about that, but
flexibility at runtime can be nice to have. Ranges seem to be focused
on the programmer's needs, and not something you can let the user play
with at runtime too much.