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Learn Prolog Now

(lpn.swi-prolog.org)
226 points rramadass | 1 comments | | HN request time: 0.206s | source
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zemptime ◴[] No.45902006[source]
I've recently started modeling some of my domains/potential code designs in Prolog. I'm not that advanced. I don't really know Prolog that well. But even just using a couple basic prolog patterns to implement a working spec in the 'prolog way' is *unbelievably* useful for shipping really clean code designs to replace hoary old chestnut code. (prolog -> ruby)
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ramses0 ◴[] No.45902088[source]
I keep wishing for "regex for prolog", ie: being able to (in an arbitrary language) express some functional bits in "prolog-ish", and then be able to ask/query against it.

    let prologBlob = new ProLog()
    prologBlob.add( "a => b" ).add( "b => c" )
    prologBlob.query( "a == c?" ) == True
(not exactly that, but hopefully you get the gist)

There's so much stuff regarding constraints, access control, relationship queries that could be expressed "simply" in prolog and being able to extract out those interior buts for further use in your more traditional programming language would be really helpful! (...at least in my imagination ;-)

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dragonwriter ◴[] No.45902589[source]
While usually using native syntax rather than strings, somethign like that exists for most languages of any popularity (and many obscure ones), in the form of miniKanren implementations.

https://minikanren.org/

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1. dragonwriter ◴[] No.45905248[source]
If you really want something that takes Prolog strings instead (and want the full power of prolog), then there are bindings to prolog interpreters from many languages, and also SWI-Prolog specifically provides a fairly straightforward JSON-based server mode "Machine Query Interface" that should be fairly simple to interface with any language.

https://www.swi-prolog.org/pldoc/man?section=mqi-overview