Question

I would like to store multiple configuration entries (which can be flexibly extended) in a data structure, something like this:

(def config [{:host "test", :port 1},{:host "testtest", :port 2}])

Later on I would like to iterate over and process each hash in that array.

Could somebody point out how to do that in Clojure?

Answer 1

You could use for (or doseq if you only want side-effects) to loop over each map stored in the vector. You can even use destructuring to bind the individual keys of the map if you know them in advance:

(def config [{:host "test", :port 1},{:host "testtest", :port 2}])

(for [{h :host p :port} config]
  (format "host: %s ; port: %s" h p))

; => ("host: test ; port: 1" "host: testtest ; port: 2")