Hi,
I try to define multi-methods but when I call one I get an exception.
I declared the multi-methods like below:
(defmulti new-food-item (fn [food expiration]
(if (number? expiration)
::duration
::expiration-date)))
(defmethod new-food-item ::duration [food expiration-duration]
(let [expiration-date (GregorianCalendar.)]
(.add expiration-date GregorianCalendar/DAY_OF_MONTH
expiration-duration)
{:name food :expiration-date expiration-date}))
(defmethod new-food-item ::expiration-date [food expiration-date]
{:name food :expiration-date expiration-date})
And when I do: (new-food-item "tomatoes" 5)
I get this exception:
ArityException Wrong number of args (2) passed to: core$class
clojure.lang.AFn.throwArity (AFn.java:437)
I don't understand where is the problem :/
Some help?
Thank you.
Chris
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