[Haskell-cafe] haskell2010 and state question.

[Magicloud Magiclouds]

On Wed, Dec 8, 2010 at 6:46 PM, Henk-Jan van Tuyl <hjgtuyl at chello.nl> wrote:
> On Wed, 08 Dec 2010 10:03:40 +0100, Magicloud Magiclouds
> <magicloud.magiclouds at gmail.com> wrote:
>
>> Hi,
>>  Formerly, I had IORef and some state monad to do the task of keeping
>> states.
>>  Now in haskell 2010, I cannot find anything about it. Do I have to
>> use ghc base package for this function?
>
> These are not standard Haskell '98 or Haskell 2010. You can find IORef in
> the base package; the state monad is in both the mtl and the transformers
> package (mtl is deprecated). The state monad uses the multi-parameter type
> class extension and is therefore not in standard Haskell '98 or Haskell 2010
> code. IORef also uses non-standard code.
>
> Regards,
> Henk-Jan van Tuyl
>
>
> --
> http://Van.Tuyl.eu/
> http://members.chello.nl/hjgtuyl/tourdemonad.html
> --
>

First to notice that. So standard-wise, there is no way to do state thing?

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