using juxt to run multiple functions.

[jay vas]

Hi guys :

I have a clojure script, the purpose is to do a whole bunch of "stats" on a JSON, just for experimenting with the
flexibility of text analysis stats in Clojure.

  ;;This is the data used in all calculations. 
  (def data ( read-json (:body (client/get "https://graph.facebook.com/peerindex"))))
    
  ;;This function works, so I thought I would modularize it a little 
  (fmap #(count(str %)) data )

  ;;This fails :( 
  (defn process[] 
                  (
                       juxt
                       (
                          fmap #(count (str %)) 
                          ;;Was hoping to add other functions here, so I could do 
                       )
                       data
                  )    
  )                             

I also tried adding "apply" before juxt and that failed.

[Sean Corfield]

Your opening paren is in the wrong place - remember paren comes before the function, not after it:

(defn process[]
  ((juxt (partial fmap #(count (str %)))
         ;; more functions
         ) data))

You need partial here or an explicit function since you're taking away the last argument (data). It might be cleaner to define each function upfront:

(defn word-length[words] (fmap #(count (str %)) words))
(defn process[]
  ((juxt word-length
         ;; more functions
         ) data ))

Also note that your parenthesis style is not idiomatic - you're laying out your parens like braces in Java (which is why I think you end up putting them in the wrong place). Try to get used to the more idiomatic layout I'm using where you use small indentation and stack trailing parens on the same line.