On Mon, Dec 6, 2010 at 5:19 AM, Meikel Brandmeyer <m...@kotka.de> wrote:
> 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])}
> ...)
Won't that make the internal recursive call fail though?
And even if not -- ugly IMO. :)
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