On Thu, Apr 7, 2011 at 11:17 AM, Jeremy Maitin-Shepard <jeremy@jeremyms.com>wrote:
On 04/07/2011 04:39 AM, Mathias Gaunard wrote:
On 07/04/2011 12:56, Thorsten Ottosen wrote:
Well, that is only a problem if you want to avoid manually applying the
adaptor twice (or more), right?
If so, I think that is a limitation we can live with. A simple solution covers most cases IMO.
Oh, the adaptor I wrote flattens recursively.
I guess just flattening the top level could be fairly easy.
You could also require that the user specify the number of levels of recursion explicitly, as in many cases the final value_type you want to iterate over may be a range itself. Consider, for instance, that a string is itself a range of characters, but in many cases the user would not want to flatten a range of strings into a range of characters.
+1 I don't think auto-detecting the flattening depth is the way to go. The closest that makes sense to me is to create a mechanism to "flatten until value_type == whatever", but that can be built as a layer on top of explicitly specifying the flattening depth. I've done this before, it's kind of a PITA and I currently don't like my current implementation and had plans at some point to rework it... - Jeff