8 Jan
2011
8 Jan
'11
7:53 a.m.
On Sat, Jan 8, 2011 at 10:45 AM, Arlen Cuss
I think there is probably an obvious solution I've missed... and hold on a minute!
map (mconcat [show, anotherFunc, yetAnotherFunc]) [1..20]
I just stumbled upon this. While I'm not 100% confident on what's just happened here, I thought I'd mail this out for everyone to enjoy the learning process that has been this email.
That's the Monoid b => Monoid (a->b) instance [1], but I don't think it is anywhere near obvious =). Cheers! [1] http://hackage.haskell.org/packages/archive/base/4.3.0.0/doc/html/src/Data-M...) -- Felipe.