Re: [Haskell-cafe] Re: Very crazy

Aaron Denney wrote:

On 2007-09-25, Andrew Coppin wrote:

...

BTW, one *extremely* common function that I've never seen mentioned anywhere is this one:

map2 :: (a -> b) -> [[a]] -> [[b]] map2 f = map (map f)

Because someone would have to think of a name for it, when (map . map) is likely to be clearer.

OK, *now* I'm puzzled... Why does map . map type-check?