Is it possible to transform a map according to a transformation that already happened in a nested map? I have nested objects that need to be marked if they have a certain ID, and if they contain a marked object they should also be marked. For example:

[{:a 1 :bs [{:b 2} {:b 3}]}
 {:a 4 :bs [{:b 5} {:b 6}]}]

;; 1, 2 and 6 need to be marked, and also those that contain them:
[{:a 1 :mark true :bs [{:b 2 :mark true} {:b 3}]}
 {:a 4 :mark true :bs [{:b 5} {:b 6 :mark true}]}]

@yonatanel I don't understand your example

the ids are sometimes under :a and sometimes under :b?

is this recursive or just 2 levels? why is the map with :a 4 getting marked in the example?

oh i see, you want to mark the parent if the child gets marked, still don't understand when to look at :a vs :b

@nathanmarz The ids can have different keys. Only their value matters in this example.

Frankly it's not recursive, just up to 2 levels deeps, but a few hours ago I thought I might need it recursive. It might be only 1 level though.

I would just do it as two separate transformations

(def data
  [{:a 1 :bs [{:b 2} {:b 3}]}
   {:a 4 :bs [{:b 5} {:b 6}]}])
   
(->> data
     (setval [ALL
              :bs
              ALL
              (selected? :b #{1 2 6})
              :mark]
       true)
     (setval [ALL
              (selected? :bs ALL (must :mark))
              :mark]
      true))

OK, nice!

It wouldn't work if I wanted to only mark id 4, but I'll figure it out.

couldn't tell from your example whether the id matching was just on nested maps or on the parent maps as well

not hard to modify to check both

Hi! Using 0.12.0 version what would be the elegant way to get in a hierarchical map like

{:a 1 :b: 1  :c {:a 2 :b 2 :c {:a 3 :b 3 :c …}…}