Re: [Haskell-cafe] Newbie: generating a truth table

On 2/10/07, Peter Berry wrote:

Sigh, I seem to have done a reply to sender. Reposting to the list.

On 06/02/07, phiroc@free.fr wrote:

...

Hello,

I would like to create a Haskell function that generates a truth table, for all Boolean values, say, using the following "and" function :

and :: Bool -> Bool -> Bool and a b = a && b

This is solution that I used with list comprehension.. combining some of the other ideas on the thread such as a tuple to see the original values and then the result. Prelude> putStrLn $ concatMap (flip (++)"\n") $ map show $ [(x,y,(&&) x y) |x <- [True,False],y <- [True,False]] (True,True,True) (True,False,False) (False,True,False) (False,False,False) gene