If you're cool with passing a map instead of plain parameters, you
could use destructuring to do this:
(defn test1 [{x :x, y :y, :or {:y 3}}]
[x y])
(test1 {:x 2}) => [2 3]
Another thing you could do would be to use variable arity and handle
the absence of the other parameters in the me
Is there a more concise way of expressing an optional parameter with a
default other than writing another entire definition?
That is, instead of:
(defn a-function ; two parameters, x and y, and y is 23 by default
([x] (a-function x 23)
([x y] ...))
...is it possible to do something lik
