I wrote:
jim burton [EMAIL PROTECTED] wrote:
Thankyou! It's http://www.rubyquiz.com - They are mostly well suited to
haskell, lot of mazes etc. I've done 5 or 6 with varying degrees of success
but have learned a lot. This thing about strings in fifths is from #1, the
solitaire cipher.
Gah! Brain AWOL. I'm surprised no-one picked me up on
that. Why didn't I use:
splitAtMb n [] = Nothing
splitAtMb n l = Just $ splitAt n l
Actually, I've some code lying around doing exactly this (but without
the padding ;)), written with the coalgebra inlined:
split n = unfoldr $ \xs -
jim burton [EMAIL PROTECTED] writes:
Paul Brown-4 wrote:
Cool idea! Can you post a link for the puzzles?
Thankyou! It's http://www.rubyquiz.com - They are mostly well suited to
haskell, lot of mazes etc. I've done 5 or 6 with varying degrees of success
but have learned a lot. This
jim burton [EMAIL PROTECTED] writes:
tweak to in_fives
in_fives l = unfoldr (splitAtMb 5)
(l ++ replicate (5 - length l `mod` 5) 'X')
Whoops! Yes. And a slapped wrist for me for writing a
constant three times. Serves me right for not writing
groups_of n l = unfolder
