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Re: better error messages through assertions
From: |
Maxim Cournoyer |
Subject: |
Re: better error messages through assertions |
Date: |
Sat, 26 Feb 2022 08:51:02 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) |
Hi Ricardo,
Ricardo Wurmus <rekado@elephly.net> writes:
> Maxim Cournoyer <maxim.cournoyer@gmail.com> writes:
>
>> I hear we now have "field sanitizers" on Guix records; without having
>> dug the details, it seems to be we could add a predicate validating the
>> input there?
>
> I don’t see how that would help here. In my example the service values
> themselves are all right. It’s a procedure acting on what it assumes is
> a list of service values that fails.
>
> Record field validation would not have prevented that error.
Thanks for explaining. For what it's worth, what you are proposing
seems a sound improvement to me, so feel free to go ahead with patches!
Thanks,
Maxim