Trying to implement juxt for fun - The below using reduce works fine -

(fn [& fns]
  (fn [& args]
    (reduce (fn [acc f]
              (cons (apply f args) acc))
            []
            fns)))

(defn my-juxt-2
  [f & fns]
  (fn [& args]
    (when f
      (cons (apply f args) (my-juxt-2 fns)))))

((my-juxt-2 + max min) 2 3 5 1 6 4)

I feel like the call to the top of my-juxt-2 inside the cons isn’t quite right

If you rewrite this to use loop/recur inside the innermost function it should work fine, right?

Currently this code is trying to cons the result of f with the function returned from my-juxt-2

yup, with loop-recur I can make it work, I am stuck on the regular recursion one.

(defn my-juxt-2
  [f & fns]
  (fn [& args]
    (letfn [(jr [[f & fns]]
              (if f (cons (apply f args) (jr fns)) []))]
      (jr (cons f fns)))))

loop/recur conceptually creates an inline function recursion too, so I think the answer is that you need one more internal function if you want to recur in that way

Yep, like that 😄

how about something like this?

@anders152 lol

You want to return a function that takes any arguments just once, and do the recursion inside of that, to apply the functions received by juxt one-by-one.

In the original version you had the top level function returned from my-juxt-2 so you would return that each time you recursively call it to progress the recursion.

Hah, juxt all the things! Contributing my little homage:

(defn yet-another-juxt
  "Yet another juxt, because, why not? :)"
  [& fns]
  (fn [& args]
    (mapv (fn [f args] (apply f args))
          fns
          (cycle [args])))) ; <-- but of course, we can omit this entirely (discussed in the thread to this message)

#_((yet-another-juxt inc dec identity) 1) ; => [2 0 1]
#_((yet-another-juxt + - *) 1 2 3 4 5)    ; => [15 -13 120]
#_((yet-another-juxt + *))                ; => [0 1]
#_((yet-another-juxt inc))                ; Barf! (As it should...)

Good Morning Clojurians. I am trying to connect https://github.com/fulcrologic/fulcro-rad-demo to Postgres. Looking through the repo, I think that the only place you have to change is in https://github.com/fulcrologic/fulcro-rad-demo/blob/master/src/shared/config/defaults.edn file. So I replaced the :hikaricp/config with:

:hikaricp/config
  {"dataSourceClassName"       "org.postgresql.ds.PGSimpleDataSource"
   "dataSource.user"           "me"
   "dataSource.password"       "mypwd"
   "dataSource.databaseName"   "mydb"
   "dataSource.portNumber"     "5432"
   "dataSource.serverName"     "localhost"