marlowsd at gmail.com
Mon Sep 21 05:52:41 EDT 2009
On 17/09/2009 13:58, Nicolas Pouillard wrote:
> Excerpts from Florian Weimer's message of Wed Sep 16 22:17:08 +0200 2009:
>> Are there any plans to get rid of hGetContents and the semi-closed
>> handle state for Haskell Prime?
>> (I call hGetContents unsafe because it adds side effects to pattern
>> matching, stricly speaking invalidating most of the transformations
>> which are expected to be valid in a pure language.)
> Would you consider something like  as an acceptable replacement?
> : http://hackage.haskell.org/package/safe-lazy-io
I rater like this as a workaround for the most common practical problems
with lazy I/O, those of resource control. It doesn't address the deeper
concern that lazy I/O requires a particular evaluation order and is
therefore a bit warty as a language feature - implementing lazy I/O
properly in GHC's parallel mutator was somewhat tricky. I'm not of the
opinion that we should throw out lazy I/O, but it's still a problematic
area in Haskell.
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