Hey Derek-
Your datascript query is actually returning a set- syntax is #{}- of array
elements, also called "tuples". You can treat the set as a sequence, use
doseq to visit each item, and destructuring on the items to assign
individual array/tuple members to symbols.
For instance, say that each array item has 2 elements, which semantically
you think of as name and value. You can do something like this:
(let [results (d/q q-list @conn)]
(doseq [[name value] results]
(println (str "name: " name " has value: " value))))
Does that help?
Jonah
On Tue, Feb 16, 2016 at 11:38 AM, Derek Frost <derekfro...@gmail.com> wrote:
> I need some advice about return values please. I'm using Datascript on
> the console with clojure and I'm doing this to get values from the d/b
> (println(d/q q-list @conn)) which gives me a hash-map of arrays. I'm
> trying to put values in a text file to convert to pdf - this is a bit mad
> but it's just to see if I can move some stuff away from xslt. Well I can
> get at individual values doing something like this (def
> -main[](println(first(d/q etc...)))) but it seems really messy. When I try
> to do this in a let block I get arity problems and I also tried passing
> this to a str then to the third argument of spit to create a text file.
> Ideally I'm trying to format the output with newlines which I know how to
> do but I can't figure out how to nest the d/b results into a variable.
>
> So my question is, is there a nicer way of putting my bulk return values
> into a variable? If I could do that, I think I could figure the rest out.
> Many thanks. I'm relatively new to clojure but I have some experience in
> scheme and lisp...
>
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