Oops, you already said that, my bad. :)
--
Science answers questions; philosophy questions answers.
On Jul 21, 2010, at 8:13 PM, Frederick Polgardy wrote:
> Or [using clojure.set] (empty? (intersection s1 s2)).
>
> --
> Science answers questions; philosophy questions answers.
>
> On Jul 21, 2010, at 4:45 PM, Travis Hoffman wrote:
>
>> The second function is suggested as an addition to clojure.set. The
>> "disjoint?" function decides if two sets have no elements in common.
>> This can easily be done using:
>>
>> (not (nil? (intersection s1 s2)))
>>
>> but this implementation should be more efficient (I think) and is more
>> readable, imho:
>>
>> (defn disjoint?
>> "Is set1 disjoint from set2?"
>> {:added "1.3" :tag Boolean}
>> [set1 set2]
>> (if (<= (count set1) (count set2))
>> (recur set2 set1)
>> (not-any? (fn [item] (contains? item set1)) set2)))
>
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