Hi,
On Apr 13, 4:20 pm, Chris Jenkins <[email protected]> wrote:
> Is there a standard function to test to see if an object is an element of a
> sequence? I'm looking for an equivalent of Haskell's elem function.
>
> I wrote my own (badly)...
>
> (defn elem? [obj l]
> (if (empty? l)
> false
> (if (= obj (first l))
> true
> (elem? obj (rest l)))))
>
> ...but it strikes me that there must be a standard function to do this.
(some #(= % obj) l) (or (some #{obj} l) if obj is neither nil nor
false).
Sincerely
Meikel
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