[Haskell-cafe] (a -> [b]) -> [a -> b] ?

[Joachim Breitner]

Hi,

while pondering over the four fours problem, I wondered: Is there a
function of type
	(a -> [b]) -> [a -> b]

It looks a bit like sequence when applied in the ((->) a) Monad:
	sequence :: [a -> b] -> a -> [b]
but I was looking for the other direction.

I came up with:
	\g -> map (\n a -> g a !! n) [1..]
which has the desired type and functionality, but it looks rather
inelegant and messy. Any better ideas?

Thanks,
Joachim

-- 
Joachim "nomeata" Breitner
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