[Haskell] Re: state of HaXml?
taralx at gmail.com
Sat Jan 6 13:15:59 EST 2007
On 1/4/07, Stefan Karrmann <S.Karrmann at web.de> wrote:
> My 2 cent:
> Why does seq not help? See code below.
The short answer is because it only forces the head of the value, not
the entire value. You need deepSeq for that.
> load fn = do handle <- IO.openFile fn IO.ReadMode
> contents <- IO.hGetContents handle
> let len = length contents
> seq len $ IO.hClose handle
> return $ XP.xmlParse fn contents
This works, because to get the head of len (an integer) you need the
whole of contents.
Taral <taralx at gmail.com>
"You can't prove anything."
-- Gödel's Incompetence Theorem
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