Clojurians Log v2

is there a better way to construct this path? maybe something involving recursive-path?

(defn tag-path [& tag-names]
  (apply
    concat
    (interpose
      [ALL]
      (map
        #(vector (selected? :tag (pred= %)) :value)
        tag-names))))

(tag-path "EA" "C1") => [(selected? :tag (pred= "EA")) :value ALL (selected? :tag (pred= "C1")) :value]

@schmee dynamic navs will dramatically increase performance when tag-path is called with dynamic params (eg. a local variable)

(defdynamicnav tag-path [& tag-names]
  (let [late-pred= (late-resolved-fn pred=)]
    (apply
      concat
      (interpose
        [ALL]
        (map
          #(vector (selected? :tag (late-pred= %)) :value)
          tag-names)
          ))))

things like this are where you get huge speedup:

(defn f [a data]
  (select (tag-path a "b") data)
  )

nice! I haven’t delved into dynamic navs yet, I’ll check them out!

but would you say that is an OK way to write the tag-path function?

with all the interpose and apply and whatnot…

not very much documentation on them, just this https://github.com/nathanmarz/specter/wiki/Specter%27s-inline-caching-implementation

yes, it's fine

all that logic only ever executes once per callsite

because of dynamicnav

excellent, thanks for the help as always

you've now delved into the most advanced part of specter ;)

let me know if you have questions

will do!

is there any way to get access to collected values in view?

@schmee no, but it's easy to make a custom navigator with that functionality

see defrichnav

:thumbsup: