Consider a function with the following signature:
(defn make-widget [& {:keys [x y] :or {x 10 y 20}}]
...)
What is the best way to pass a map to the function, e.g.:
(make-widget {:x 100})
or
(make-widget {:y 200 :x 0})
What I have currently thought of is via vec, flatten and apply e.g.:
(apply make-widget (flatten (vec ({:x 100}))
I strongly believe there is a better way to do this. Can you please consider one?
For anyone reading this after 2021, since Clojure 1.11 you can pass a map to a function directly (in the way the original question wished for). No need to do any extra work!
(defn make-widget [& {:keys [x y] :or {x 10 y 20}}]
[x y])
(make-widget :x 1) ; => [1 20]
(make-widget {:x 100}) ; => [100 20]
(make-widget {:y 200 :x 0}) ; => [0 200]
For more details, see the original announcement at https://clojure.org/news/2021/03/18/apis-serving-people-and-programs