On Mar 22, 2013 2:58 AM, "C K Kashyap" <[email protected]> wrote: > > Thanks Eric and Brent, > > Even with GADT, it appears that I'd need extra data definitions. I'll go without GADT then ... > > Brent, my use case is not particularly complicated. I am trying to model the pdf spec - which says that pdf contains Objects that could of of types Number, String, Name, Array and Dictionary - while array is list of objects, the Disctionary is a list of tuples (Name, Object) not (Object, Object) - hence my situation. > > Regards, > Kashyap >
You could have a look at how the aeson package represents JavaScript values, which have a similar structure to your requirement, e.g. http://hackage.haskell.org/packages/archive/aeson/0.6.1.0/doc/html/Data-Aeson-Types.html#t:Value Doug
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