[Haskell-cafe] Re: Why does HXT use Arrows?
lemming at henning-thielemann.de
Fri Dec 25 15:29:16 EST 2009
On Fri, 25 Dec 2009, Heinrich Apfelmus wrote:
> Which begets the question of whether HXT actually uses a way of taking
> input other than as function parameter. It appears to me that it doesn't.
> Put differently, I suspect that all of HXT can be rewritten to
> mkCmt :: String -> M XmlTree
> mkElement :: QName -> (n -> M XmlTree) -> (n -> M XmlTree)
> -> (n -> M XmlTree)
> ArrowXML a => a b c ~=~ b -> M c
> with M a = [a] being the list monad or some list augmented with IO.
I think this is the way, HXT was designed first. The functions are still
available in hxt-filter.
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