[Haskell-beginners] Prolog

Kim-Ee Yeoh ky3 at atamo.com
Tue Oct 30 07:08:20 CET 2012

There are multiple senses of the word "declarative". I'd say the
terminology came from trying to figure out the difference
between describing a problem (declarative) and telling the computer exactly
how to solve it (imperative).

You might want to take a look at how Haskell and Prolog approach the
n-queens problem. The haskell solutions I've seen, with prolog as foil, now
take a positively imperative hue!

-- Kim-Ee

On Sun, Oct 28, 2012 at 1:27 PM, Christopher Howard <
christopher.howard at frigidcode.com> wrote:

> Hi. I still have a lot to learn in Haskell (who doesn't?) but I was
> thinking about learning Prolog on the side. I was wondering what you
> thought about the language. I was interested in it primarily because I
> understood it was a purely declarative language and that everything is
> defined in the programs as relations. However, at the Wikipedia page it
> states that Prolog is not actually purely declarative, referencing an
> article which points out that it is necessary to think about Prolog
> programs procedurally because of the way that Prolog resolves queries.
> Is this not as big a deal as it sounds like? Or is there some other
> similar language I should learn instead? (One of the "successors" of
> Prolog?)
> I'm fairly open minded, so long as all the tools are FOSS. Though of
> course, a language with better community support, documentation, etc. is
> preferable.
> --
> frigidcode.com
> indicium.us
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