We don't encourage you to do this, but I don't have an easier solution than
this.
On Thursday, February 2, 2017 at 7:05:37 AM UTC-6, Dave Tenny wrote:
>
> I want to specify in clojure spec that only declared keywords are
> permitted in function calls.
> This is to catch what are usually mis-spelled or mis-cased keywors passed
> via option maps in function calls.
>
> In the fdefs below, the second fdef will catch an invalid call, e.g.
> (f 1 {:a 2 :B 3})
> but the first fdef will not.
>
> Is there an easier way to specify the more restrictive spec without having
> to add my own 'every' and enumeration of the keys?
> (or build my own version of s/keys that does this automatically, which I'm
> guessing is the answer).
>
> (require '[clojure.spec :as s])
> (require '[clojure.spec.test :as stest])
>
>
> (s/def ::x (fn [x] true)) ;for lack of any?
>
>
> ;; Will not catch invalid keywords
> (s/fdef f
> :args (s/cat :x ::x
> :options (s/keys :opt-un [::a ::b]))
> :ret nil?)
>
>
> ;; Will catch invalid keywords, but is there an easier way?
> (s/fdef f
> :args (s/cat :x ::x
> :options (s/and (s/keys :opt-un [::a ::b])
> #(every? #{:a :b} (keys %))))
> :ret nil?)
>
>
> (defn f [x {:keys [a b]}])
>
>
> (stest/instrument `f)
>
>
>
>
>
>
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