Hi again,
Andrea Faulds wrote:
I am not sure if I think this is a good idea… for one thing it may not
be necessary to add support in core for this, because you could easily
write a userland Iterator class that wraps a generator-returning closure
and (re-)invokes it for you. If you do it yourself that way, it's clear
what's actually happening behind the scenes at least.
If it must be done, perhaps the code must explicitly opt-in to being
rewindable somehow? That would avoid problems with rewinding generators
which aren't designed for it.
Now that I think about it, such a wrapper class could be part of the PHP
standard library. Spl already provides InfiniteIterator and
NoRewindIterator, so an InfiniteGenerator class would feel right at
home, I think!
Thanks,
Andrea
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