Here, I think an examples worth a thousand poi....err, words. This one
comes from YAHT. Consider the two implementations of the following
function:
lcaseLetters :: String -> String
lcaseLetters s = map toLower (filter isAlpha s)
lcaseLetters :: Strint -> String
lcaseLetters = map toLower . filter isAlpha
Both functions will do the exact same thing. The second, however is
written completely in terms of function composition and application.
The s in the first implementation is what's being referred to as a
'point'.
On 12/14/06, Steve Downey
i'm not naive enough to think they are the composition function, and i've gathered it has something to do with free terms, but beyond that i'm not sure. unless it also has something to do with fix points? _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe