[Haskell-cafe] Status of Acid-State and IxSet

Adam Gundry adam at well-typed.com
Fri May 29 08:53:23 UTC 2015


On 28/05/15 19:05, JP Moresmau wrote:
> Hello, for a project I decided to use Acid-State and IxSet, and was
> pretty happy with them. I enjoyed working with Haskell structures for
> storing and querying data, and my data could fit in memory. However, now
> I've moved to GHC 7.10, and for example syb-with-class, a dependency of
> ixset, does not build with template-haskell 2.10. So I'm wondering, are
> these projects still alive and kicking? Are if I want some memory based
> storage and indexing, should I look at some other projects (maybe
> VCache http://hackage.haskell.org/package/vcache). Or is it just bad
> timing and GHC 7.10 compatible versions of these libraries are in the works?

Another alternative to ixset is ixset-typed [1], by my colleague Andres.
It has an API rather like ixset, but with much stronger type-level
guarantees, and it is fairly easy to port code from one to the other.
Moreover, it doesn't depend on syb-with-class.

Hope this helps,


[1] https://hackage.haskell.org/package/ixset-typed

Adam Gundry, Haskell Consultant
Well-Typed LLP, http://www.well-typed.com/

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