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bug#34708: alist-get has unclear documentation
From: |
Eric Abrahamsen |
Subject: |
bug#34708: alist-get has unclear documentation |
Date: |
Tue, 05 Mar 2019 14:50:33 -0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Michael Heerdegen <michael_heerdegen@web.de> writes:
> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>
>> Thanks for spelling all this out! I guess my confusion is the
>> interaction of REMOVE with DEFAULT. Why does REMOVE only do anything
>> if the value being set is equal to the DEFAULT? If they are not equal,
>> REMOVE is ignored, and the value is set. How does that make sense?
>
> If you do (setf GV V) with some place expression GV and some value V,
> you expect that afterwards GV evaluates to V.
>
> If (setf (alist-get key alist nil 'remove) t) would remove the
> association of KEY,
>
> (alist-get key alist nil 'remove)
>
> or
>
> (alist-get key alist nil)
>
> would not eval to nil, although you have set the place to t.
>
> With other words: removing elements from an alist is something that
> doesn't fit 100% to place expressions, so the syntax and semantics you
> get are not 100% straightforward. Not super sexy, but consistent.
Okay, I guess that makes sense, thanks. But we still need some more
examples in the docstring!
- bug#34708: alist-get has unclear documentation, (continued)
- bug#34708: alist-get has unclear documentation, Miguel V. S. Frasson, 2019/03/03
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/03
- bug#34708: alist-get has unclear documentation, Drew Adams, 2019/03/03
- bug#34708: alist-get has unclear documentation, Eric Abrahamsen, 2019/03/03
- bug#34708: alist-get has unclear documentation, Eric Abrahamsen, 2019/03/04
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/04
- bug#34708: alist-get has unclear documentation, Eric Abrahamsen, 2019/03/04
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/04
- bug#34708: alist-get has unclear documentation, Eric Abrahamsen, 2019/03/04
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/05
- bug#34708: alist-get has unclear documentation,
Eric Abrahamsen <=
- bug#34708: alist-get has unclear documentation, Drew Adams, 2019/03/05
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/11
- bug#34708: alist-get has unclear documentation, Drew Adams, 2019/03/11
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/11
- bug#34708: alist-get has unclear documentation, Drew Adams, 2019/03/11
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/12
- bug#34708: alist-get has unclear documentation, Drew Adams, 2019/03/12
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/12
- bug#34708: alist-get has unclear documentation, Drew Adams, 2019/03/12
- bug#34708: alist-get has unclear documentation, Michael Heerdegen, 2019/03/12