On Tue, Feb 14, 2012 at 8:03 PM, Jeff Shaw
If we want to argue about maybeTo and the Fairbairn threshold, probably we should argue about whether to include maybeToList, which is less general than maybeTo.
This is a much harder sell, because it has to overcome the fact that such a change for the sake of intellectual purity would break existing code needlessly. The fact that this becomes a consideration is further argument against carelessly expanding the library. I'm not saying that the combinators under discussion are a careless expansion, merely that their addition needs to be weighed against those other concerns. I'm still a lukewarm +1 for adding maybeTo/maybeA if better names can be derived. Annoyingly it doesn't fit any of the m prefix or M suffix guidelines in Control.Monad, so the obvious maybeM or mmaybe would be misapplied. -Edward