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 <[email protected]> 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...
>
> --
> You received this message because you are subscribed to the Google
> Groups "Clojure" group.
> To post to this group, send email to [email protected]
> Note that posts from new members are moderated - please be patient with
> your first post.
> To unsubscribe from this group, send email to
> [email protected]
> 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 [email protected].
> For more options, visit https://groups.google.com/d/optout.
>
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to [email protected]
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
[email protected]
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 [email protected].
For more options, visit https://groups.google.com/d/optout.
