24 Nov
2004
24 Nov
'04
7:53 a.m.
ajb@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. -- Lennart