From: Christopher Baines <mail@cbaines.net>
To: Luciana Lima Brito <lubrito@posteo.net>
Cc: guix-devel@gnu.org
Subject: Re: Outreachy - Guix Data Service: questions about improving the data for derivation comparisons.
Date: Mon, 26 Apr 2021 22:21:50 +0100 [thread overview]
Message-ID: <87im48g2s1.fsf@cbaines.net> (raw)
In-Reply-To: <20210426161103.0647ee3f@lubrito>
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Luciana Lima Brito <lubrito@posteo.net> writes:
> On Mon, 26 Apr 2021 09:15:37 +0100
> Christopher Baines <mail@cbaines.net> wrote:
>
>> So, one advantage of alists over lists is that the code is probably
>> less brittle when adding elements say, since code parsing the list
>> will probably break with a new element, but this is probably less
>> likely to happen with an alist.
>>
>> However, this will happen with an alist if match is used to pick
>> elements out. I'd suggest using assq-ref or similar to pluck elements
>> out.
>
> Ok, I changed that on the html.scm.
Great :)
Rather than writing:
(match-lambda
((alist ...)
I'd just use
(lambda (alist)
as I think that's equivalent right?
>> I'd consider these options first probably:
>>
>> - Could the data coming from derivation-differences-data have vectors
>> where appropriate already? The HTML code would probably need to be
>> adjusted, but I think that's fine.
>
> I tried this for days but with no success. Maybe the only way would be
> to tweak group-to-alist, but it touches many places, and I didn't want
> to mess with it.
Maybe add another procedure that combines group-to-alist but generates
an alist with vectors as the values? (group-to-alist/vector maybe).
>> - Could this be written in a form like:
>>
>> ,@(map (lambda (name)
>> ...)
>> '(outputs inputs sources arguments))
>
> This only make sense to me inside render-json (because of the ,@), but I
> think the code would be less clean and "arguments" would appear in a
> different order. What I did was bind the result of a function similar
> to this in the let.
I think using let is OK, but I think just unpacking data-groups as
you've called it directly in to the alist is fine (so ,@data-groups),
rather than picking out the elements. JSON objects are unordered, so the
ordering isn't something that really matters.
If you do go down this route though, I'd probably add a comment saying
what things are being added to the outer most alist, just to make the
code quicker to read.
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next prev parent reply other threads:[~2021-04-26 21:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-21 18:29 Outreachy - Guix Data Service: questions about improving the data for derivation comparisons Luciana Lima Brito
2021-04-22 7:53 ` Christopher Baines
2021-04-22 20:00 ` Luciana Lima Brito
2021-04-22 20:08 ` Christopher Baines
2021-04-22 21:02 ` Luciana Lima Brito
2021-04-22 21:15 ` Christopher Baines
2021-04-23 21:15 ` Luciana Lima Brito
2021-04-23 21:48 ` Christopher Baines
2021-04-25 20:15 ` Luciana Lima Brito
2021-04-26 8:15 ` Christopher Baines
2021-04-26 19:11 ` Luciana Lima Brito
2021-04-26 21:21 ` Christopher Baines [this message]
2021-04-27 13:10 ` Luciana Lima Brito
2021-04-27 18:23 ` Christopher Baines
2021-04-27 18:33 ` Luciana Lima Brito
2021-04-27 18:42 ` Christopher Baines
2021-04-27 19:53 ` Luciana Lima Brito
2021-04-27 20:29 ` Christopher Baines
2021-04-27 22:35 ` Luciana Lima Brito
2021-04-28 7:56 ` Christopher Baines
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