Rencent posts about DData and such make me think... Shouldn't it be integrated in the hierarchical libraries?
Hi JP, It would be cool to have it in the hierarchical libraries. I am thinking about it, but it would probably be best if it moved to something like Misc.DData instead of Data.DData, since it a lot the DData stuff is already there as Data.FiniteMap etc. Secondly, it is relatively easy to just copy the files to your project and use it there, as they are all stand-alone Haskell modules.
Besides, it looks like Edison has been dropped from GHC.
No one seems to support Edison. However, there is an important difference between Edison and DData: DData provides implementations of specific structures, while Edison tried to provide general collection interfaces *and* implementations. I believe that designing good generic collection interfaces is very hard and may even be impossible to do "right" in current Haskell's. So, I guess we will be stuck with concrete data structures for a while :-) All the best, Daan.