On Thu, 12 Sep 2013 18:24:24 +0400, Tom Ellis
<tom-lists-haskell-cafe-2...@jaguarpaw.co.uk> wrote:
On Thu, Sep 12, 2013 at 09:21:20AM -0400, Scott Lawrence wrote:
Something's always bothered me about map and zipWith for ByteString.
Why is it
map :: (Word8 -> Word8) -> ByteString -> ByteString
but
zipWith :: (Word8 -> Word8 -> a) -> ByteString -> ByteString -> [a]
Well, what if you wanted to zipWith a function of type "Word8 -> Word8 ->
Foo" instead of "Word8 -> Word8 -> Word8"?
Then why doesn’t map take “Word8 -> a”, but only “Word8 -> Word8”?
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