This is what I've done but it contradicts what we said earlier... If I navigate to some existing key and it gives me back a Java object, then it means that the datafied representation had a key pointing to non data!
I have read your blog post multiple times ;), but I think the situation you're describing with the foreign keys is rather unique... The datafied datetime cannot possibly include all its possible formats, nor all the possible alternatives - that would be extremely wasteful and meaningless the way I see it. Let's take an Instant as an example...it datafies to map of two keys (:epoch, :second). Does it make sense to add a :format-iso key in there pointing to a String? Is there any point navigating to that key? Is there any point navigating to :epoch or :second? The answer is no, right? Is there a point in navigating to :zoned-datetime given a zone id? I would think yes... On Mon, 3 Feb 2020, 04:47 Sean Corfield, <s...@corfield.org> wrote: > Think of it as a square: > > You start with an object of some sort (left side) -> datafy -> turns it > into pure Clojure data (including metadata). (right side) > > Given pure Clojure data, you can navigate through it with get etc and you > stay in the right side (pure data). > > Given that pure Clojure data, you can navigate back to the left hand wide > with nav, mimicking how get etc work. > > So datafy is L -> R, get is R -> R, nav is R -> L on a "diagonal" that > takes you back to the object world on the left, corresponding to the place > on the right that you'd get to via get etc. > > See if this blog post helps > https://corfield.org/blog/2018/12/03/datafy-nav/ > > > On Sun, Feb 2, 2020 at 1:22 AM Dimitrios Jim Piliouras < > jimpil1...@gmail.com> wrote: > >> Hi Sean, >> >> >> >> Admittedly, I’ve never used REBL, and I did struggle with the shape and >> name of the `nav` arguments... >> >> >> >> In particular I’m struggling to understand why would anyone use `nav` to >> navigate to a key that already exists in the map...Can’t we just use `get` >> or `get-in`? >> >> You used the :format as an example, which works with nil, :iso, or a >> String pattern as the last arg to nav. But again, :format is NOT in the >> datafied representation. >> >> >> >> In essence, I’ve tried to use `nav` to navigate to things that can be >> expensive and don’t necessarily belong in the actual datafied >> representation. >> >> If the second argument to `nav`, is expected to be a key already present >> in the map, then I really don’t understand what is the point of `nav`. >> >> >> >> kind regards, >> >> Dimitris >> >> >> >> >> >> *From: *Sean Corfield <s...@corfield.org> >> *Sent: *02 February 2020 07:36 >> *To: *Clojure Mailing List <clojure@googlegroups.com> >> *Subject: *Re: ANN: jedi-time 0.1.4 >> >> >> >> This is very cool but I would strongly recommend you try using this with >> REBL so you can figure out how to make the `nav` part work in a more >> natural way. >> >> >> >> nav is intended to work with a key and value (from the datafied >> structure), but your nav expects special values so it doesn't work with >> REBL. >> >> >> >> You can put (java.time.Instant/now) into REBL and your datafication >> produces a great data representation, but you can't navigate into it using >> the keys (and values) of the data structure itself. You can put :format >> into the nav-> bar and it defaults to a format you can get a string back, >> but none of the other nav calls will work. >> >> >> >> You might consider combining the :format key with the actual format, >> e.g., :format-iso, :format-yy-MM-dd and if the key is something your don't >> recognize, just let it behave like regular data navigation. >> >> >> >> I think you're trying to do too much with nav, beyond "navigation". I >> think you could split some of the "clever" navigation out into a transform >> function that takes a datafied time and produces a new datafied time, and >> then let nav do the "conversion" back to Java objects. You've complected >> the transforms and the conversion right now. >> >> >> >> If you're on Slack, I'm happy to DM about this in more detail (when >> you're back from traveling). >> >> >> >> Sean >> >> >> >> On Sat, Feb 1, 2020 at 6:02 AM dimitris <jimpil1...@gmail.com> wrote: >> >> Hi folks, >> >> The first public release of `jedi-time` should be hitting clojars any >> minute now. I am traveling next week so may be slow to reply to >> feedback/bugs/PRs... >> >> https://github.com/jimpil/jedi-time >> >> >> Kind regards, >> >> Dimitris >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/clojure/8dbb9c5b-0ab0-fc76-6dc6-5e75b93d452a%40gmail.com >> . >> >> >> >> >> -- >> >> Sean A Corfield -- (904) 302-SEAN >> An Architect's View -- http://corfield.org/ >> World Singles Networks, LLC. -- https://worldsinglesnetworks.com/ >> >> "Perfection is the enemy of the good." >> -- Gustave Flaubert, French realist novelist (1821-1880) >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/clojure/CAD4thx-dwJkYYsGDWnD%3DAc7oaNBHqykGPzYhTHdWQRJmbk1DEw%40mail.gmail.com >> <https://groups.google.com/d/msgid/clojure/CAD4thx-dwJkYYsGDWnD%3DAc7oaNBHqykGPzYhTHdWQRJmbk1DEw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/clojure/5e3694b9.1c69fb81.8a875.d5ea%40mx.google.com >> <https://groups.google.com/d/msgid/clojure/5e3694b9.1c69fb81.8a875.d5ea%40mx.google.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > Sean A Corfield -- (904) 302-SEAN > An Architect's View -- http://corfield.org/ > World Singles Networks, LLC. -- https://worldsinglesnetworks.com/ > > "Perfection is the enemy of the good." > -- Gustave Flaubert, French realist novelist (1821-1880) > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/clojure/CAD4thx8GRuxeGd-MrMSti%2BWRV1neRFOLWNh08xpb-Qrmya0kZw%40mail.gmail.com > <https://groups.google.com/d/msgid/clojure/CAD4thx8GRuxeGd-MrMSti%2BWRV1neRFOLWNh08xpb-Qrmya0kZw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Clojure" group. 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