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i wasn't really trying to achieve anything useful - just messing
around and see where i get.
now i'm here:
(defrecord point [x y z])
(defn genPoints [n]
(let [random (new Random)
randomInt #(.nextInt random)
randomPoint #(new point (randomInt) (randomInt) (randomInt))]
(repeatedly n randomPoint)))
is there a way to avoid writing (randomInt)(randomInt)(randomInt) and
instead something like (magic (repeatedly 3 randomInt))?
Am 25.09.2011 22:14, schrieb Baishampayan Ghose:
> On Mon, Sep 26, 2011 at 1:21 AM, Dennis Haupt
> <d.haup...@googlemail.com> wrote:
>> (let [rand (new java.util.Random) nextInt (fn [a] (.nextInt
>> rand))] ((map (print) (iterate ((nextInt "dummy") 0)))))
>>
>>
>> the error is: java.lang.ClassCastException: java.lang.Integer
>> cannot be cast to clojure.lang.IFn (NO_SOURCE_FILE:0)
>>
>> why does it want to cast my "0" to a function? and how can i get
>> rid of the dummy parameter [a]?
>
> You have too many parentheses in your code. The error is coming
> because of the ``((nextInt "dummy") 0)'' line where you are trying
> to call an integer (the result of calling nextInt on "dummy") as a
> function.
>
> I don't know what exactly you are trying to achieve here, but
> assuming that you want n consecutive pseudo-random integers, I
> would write it like this -
>
> (let [rnd (java.util.Random.) next-int #(.nextInt rnd)] (repeatedly
> 10 next-int)) ; substitute 10 with desired number
>
> Regards, BG
>
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