5 Feb
2007
5 Feb
'07
5:48 a.m.
Hello J., Sunday, February 4, 2007, 11:46:57 PM, you wrote:
exists s wmap = isJust $ find (==s) . snd =<< Map.lookup (sort s) wmap
exists s wmap = Map.lookup (sort s) wmap >>== snd >>== find (==s) >>== isJust a>>==b = a>>=return.b -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com