Hi,
Am 06.12.2010 um 10:14 schrieb Ken Wesson:
>> Then we could use arity functions. (Alex Osborne)
>>
>> (defn list-length
>> ([coll] (list-length coll 0))
>> ([coll n] (if-let [s (seq coll)]
>> (recur (rest s) (inc n))
>> n)))
>>
>> This is nice style in my opinion
>
> Not in mine -- it exposes a public API of
> list-length-plus-some-integer that a) doesn't make much sense and b)
> is unlikely to be supported, since the implementation could be changed
> to one that doesn't expose this.
One can easily hide the second arity from the contract.
(defn list-length
{:arglists '([coll])}
...)
Sincerely
Meikel
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