[Haskell-cafe] I'm reading #OutOfTheTarPit does ghc have a relational model built in for state?

Oliver Charles ollie at ocharles.org.uk
Thu May 21 14:02:48 UTC 2015


It still works and I use it, but when you start using grouping you have to
rely on partial functions (`the`, which is basically `head`), which makes
me a little uncomfortable.

On Thu, May 21, 2015 at 2:52 PM, Alberto G. Corona <agocorona at gmail.com>
wrote:

> There was the long forgotten  generalised List Comprehensions. Is it still
> working in the last versions?
>
> -XTransformListComp
>
>
> 2015-05-21 13:55 GMT+02:00 Oliver Charles <ollie at ocharles.org.uk>:
>
>> The https://hackage.haskell.org/package/tables library is one way to get
>> a somewhat relational view of in-memory data.
>>
>> - Ollie
>>
>> On Thu, May 21, 2015 at 10:31 AM, Tom Ellis <
>> tom-lists-haskell-cafe-2013 at jaguarpaw.co.uk> wrote:
>>
>>> On Tue, May 19, 2015 at 11:35:31AM -0700, KC wrote:
>>> > I'm reading #OutOfTheTarPit does ghc have a relational model built in
>>> for
>>> > state?
>>> >
>>> > "Out of the Tar Pit" talks about FRP - Functional Relational
>>> Programming
>>>
>>> I guess you're looking for an "in memory" relational implementation.
>>> Opaleye and Relational Record, that Ben Ford mentioned, are for building
>>> queries for external SQL databases.
>>>
>>> For some time now I've been thinking about implementing such an "in
>>> memory"
>>> database with the same API as Opaleye, and I know Edward Kmett has
>>> thought
>>> about efficient ways to implement such a thing using the techniques of
>>> "discrimination" that he is fond of.  I for one don't have anything to
>>> show
>>> yet, but I will certainly announce it here if and when I do.
>>>
>>> Tom
>>> _______________________________________________
>>> Haskell-Cafe mailing list
>>> Haskell-Cafe at haskell.org
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>>>
>>
>>
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>>
>
>
> --
> Alberto.
>
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