Re: [Haskell-cafe] Filter by several predicates at once

Hi

...

passall, passany :: [a -> Bool] -> a -> Bool passall ps v = and $ map ($v) ps passany ps v = or $ map ($v) ps

or something similar defined anywhere? Such that one can write

Don't think so. One thing I have often wanted is something like: or1 a b x = a x || b x or2 a b x y = a x y || b x y Then you can do: filter ((>5) `or1` odd) [0..10] filter ((>5) `and1` odd) [0..10] You can imagine that or1 could get a symbol such as ||#, and or2 could perhaps be ||## (if # wasn't already really overloaded) Thanks Neil