Should SRFI-69 should always evaluate in same order? Jakub T. Jankiewicz (14 Jan 2024 12:18 UTC)
Re: Should SRFI-69 should always evaluate in same order? Jakub T. Jankiewicz (14 Jan 2024 15:35 UTC)
Re: Should SRFI-69 should always evaluate in same order? Jeronimo Pellegrini (14 Jan 2024 15:53 UTC)
Re: Should SRFI-69 should always evaluate in same order? Marc Nieper-Wißkirchen (14 Jan 2024 16:10 UTC)

Re: Should SRFI-69 should always evaluate in same order? Jeronimo Pellegrini 14 Jan 2024 15:52 UTC

As I understand from the text yes, it can be any order (am I right?).
The STklos implementation does use a random ordering.
J.

On 2024-01-14 12:35, Jakub T. Jankiewicz wrote:
> I think that I've quoted a wrong SRFI. I wanted to ask about macro
> `independently` (SRFI-236) that evaluate the code in unspecified order.
>
> The example implementation always execute in reverse order. Can the
> order be
> random?
>
> On Sun, 14 Jan 2024 10:09:12 -0500
> John Cowan <xxxxxx@ccil.org> wrote:
>
>> I'd say that the SRFI is unspecified.  However, there is a tradeoff.
>> In
>> some cases, randomization can be valuable to mitigate DoS attacks.
>> However, there is a cost to using it all the time, and it compromises
>> the
>> reproducibility of builds (this may not matter in a JS environment).
>> I'd
>> say, make it an option when the hash table is created.
>>
>> You might want to consider the more modern SRFI 125 (which depends on
>> SRFIs
>> 128 and 126).
>>
>> On Sun, Jan 14, 2024 at 7:19 AM Jakub T. Jankiewicz <xxxxxx@onet.pl>
>> wrote:
>>
>> > I have a question about SRFI-69. Example implementation R7RS always
>> > evaluate
>> > in the same order. Is this implementation ok according the SRFI, or should
>> > it
>> > always run the code in different order (random)?
>> >
>> > Is unspecified, can be always the same or can it be random?
>> >
>> > I implemented lips macro for LIPS Scheme that use randomize of the code
>> > before returning the results.
>> >
>> > My code use JavaScript Array::sort with Math.random, that is not real
>> > random
>> > like real shuffle but it give different result each time.
>> >
>> > --
>> > Jakub T. Jankiewicz, Senior Front-End Developer
>> > https://jcubic.pl/me
>> > https://koduj.org
>> >
>
> --
> Jakub T. Jankiewicz, Senior Front-End Developer
> https://jcubic.pl/me
> https://lips.js.org
> https://koduj.org