Re: [Haskell-cafe] Collection of objects?

this is not exactly what you are looking for, but it contains a link to HList: http://www.haskell.org/haskellwiki/Extensible_record and then there is the follow-up work to HList, an OO library written in Haskell: http://homepages.cwi.nl/~ralf/OOHaskell/ it's quite a challenging read if you just want to go ahead and use hetero-collections, but it should give you a lot of ideas and pointers. i think there are also less type-safe alternatives in at least ghc. is Data.Typeable an interesting thing to look at? hth, matthias On Fri, Nov 17, 2006 at 06:36:30PM +0100, Valentin Gjorgjioski wrote:

To: haskell-cafe@haskell.org From: Valentin Gjorgjioski Date: Fri, 17 Nov 2006 18:36:30 +0100 Subject: [Haskell-cafe] Collection of objects?

Is some kind of collection of object with different types in Haskell exist? Except the tuples, which have fixed length. I find this

* Tuples heterogeneous, lists homogeneous. * Tuples have a fixed length, or at least their length is encoded in their type. That is, two tuples with different lengths will have different types. * Tuples always finite.

But I need something which is heterogeneous and non-fixed length. I'm used do Java, and this switch to functional languages is very strange to me. So, to be clear, I need something like LinkedList<Object> in java.

Can you please help me or suggest me, what can I use in this case?

Valentin _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe

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