On Wed, Dec 8, 2010 at 6:46 PM, Henk-Jan van Tuyl <hjgt...@chello.nl> wrote: > On Wed, 08 Dec 2010 10:03:40 +0100, Magicloud Magiclouds > <magicloud.magiclo...@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? -- 竹密岂妨流水过 山高哪阻野云飞 _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
