Absolutely true that same functionality can be achieved with a nested for-loop or a flatMap, however for a 10+ nesting levels - or dynamic number/order of nesting levels - it becomes hardly manageable.
On 2024/06/26 21:02:53 Peter Burka wrote: > I don't know if it's been proposed before, but I think any implementation > would necessarily be inefficient. > I imagine such an iterator would need to produce objects of type Pair<A,B>. > This would lead to a lot of allocation and could create garbage collection > pressure. The same functionality can be achieved with a nested for-loop (or > flatMap()), much more efficiently. > > > On Wed, Jun 26, 2024, 12:27 PM Alexey Pelykh <al...@gmail.com> > wrote: > > > G'day to all! > > > > It seems there's no Iterator that would implement the same thing as > > Python's itertools.product (quite literally a nested for loop) with some > > Java stream() capabilities. > > Is this intentional (as in, was considered and rejected) or a PR with such > > CartesianProductIterator would be welcomed? > > > > Be well, > > Alexey > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
