>> (defmacro in?
>> "Returns true if colle contains elm, false otherwise."
>> [colle elm]
>> `(if (some #{~elm} ~colle) true false))
Yes. Should not be a macro. (There is no reason for it to be a macro).
On top of that, it is not very often useful to convert nil to false as
clojure understands nil/not-nil as false/true everywhere.
(Someone corrects me if there is a counter example.)
Might be useful for java interop?
Then I would define a
(defn to-bool [x]
(if x true false))
and use it when necessary.
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