[Haskell] Re: Global Variables and IO initializers
lennart at augustsson.net
Wed Nov 24 02:53:47 EST 2004
ajb at spamcop.net wrote:
>>No. I mean by the "Haskell language" what is described in
>>the Haskell 98 Report. unsafePerformIO is not part of the language,
>>it is a value defined by one of the standard hierarchical libraries.
> unsafePerformIO is part of the FFI addendum to the H98 report. So I
> think it counts as being part of "the Haskell language" by any reasonable
> sense of that phrase.
Well, I don't. unsafePerformIO is an extension that is very much
against the spirit of Haskell. Haskell with it does not have the
properties I want. So I don't use it. :)
I think any addition that breaks the semantics of the language
should be very clearly labelled as such.
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