21 Dec
2009
21 Dec
'09
1:03 a.m.
On Mon, Dec 21, 2009 at 01:46:57AM +0100, Daniel Fischer wrote:
Am Montag 21 Dezember 2009 01:00:10 schrieb Felipe Lessa:
There's 'unamb' in Hackage, however I think you should carefully understand its implementation details before using it. Not that I use it myself.
Which is a (much) refined version of the above, wrapped in unsafePerformIO. It is your obligation to call it only when legit, because it is *not* referentially transparent:
Actually my concern was about performance, not correctness. That's why I mentioned the "implementation details". It is probably easy to make your machine crawl by putting unamb in your inner loop. -- Felipe.