Display parallel Clojure array and range values

Question

The following function takes a range of Celcius temperatures, converts them to Fahrenheit, and puts them into an array.

(defn build-f [size]
    (map float (vec (map  #(+(/(* % 9)5)32) (range size)))))

My goal is then to print each converted temperature in the following format:

C[0] = 32 F
C[1] = 33.8 F
...

The format doesn't really matter. I'm new to functional programming and still thinking the OOP

way. I tried to use the map function to do that. What should I go with? Map, reduce, for, doall?

So far I came up with the following:

display-format function should display something like this C[0] =. I'm not sure how to place that [index] there though.

(defn display-format [t-scale] (println t-scale "=" ))
display-array function should use the map function to apply display-format function to the array.

(defn display-array [t-scale array] (map (display-format t-scale) array))

Am I going in the right direction?

Update: Here the code I was going for. Hope it helps someone.

(defn display-table [from-scale array to-scale]
  (map #(println (str from-scale "[" %1 "] = " %2 " " to-scale)) 
  (range (count array)) array))

SO is for concrete programming problems. Please implement the function like you think it's OK and if you get errors, add the code to the question and what errors there are. Otherwise I am not clear about what you are asking. "Will this code work?" Why not try it out? — cfrick

Alan Thompson Alan Thompson · Accepted Answer · 2020-08-16T18:14:31

Please see this list of documentation. Especially study the Clojure CheatSheet.

For your purposes, study

doseq for looping over the values to print output
format for using %d and similar output formatting options
str for concatenating strings
I'd suggest making a function celcius->farenheit and then calling that in a loop. Call double on the input arg and it will avoid any worries about int vs float all the way downstream.
I always prefer mapv over map to eliminate problems from laziness

Enjoy!