On Mar 6, 2007, at 16:22 , D.V. wrote:
On 3/6/07, mm <[EMAIL PROTECTED]> wrote:
I cannot help you with your question more than pointing you to
http://bugs.darcs.net/issue391
where Simon Marlow explains how to avoid "IO.bracket".
I'm using Control.Exception's bracket.
Also, following Jeremy's advice, I replaced the last line of rechf2
with return $! rech r $ lines f and indeed it works.
I don't understand why it doesn't without the !
The documentation for hGetContents says the items are read on demand.
the function rech needs the strings so they should be read on demand.
This confuses me :(
Because rech is lazy so it only reads them when something demands it
do so (e.g. IO, or $! which forces strict evaluation).
--
brandon s. allbery [linux,solaris,freebsd,perl] [EMAIL PROTECTED]
system administrator [openafs,heimdal,too many hats] [EMAIL PROTECTED]
electrical and computer engineering, carnegie mellon university KF8NH
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