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Re: sorted?
From: |
tomas |
Subject: |
Re: sorted? |
Date: |
Mon, 9 Dec 2024 21:36:54 +0100 |
On Mon, Dec 09, 2024 at 08:45:33PM +0100, Mikael Djurfeldt wrote:
> On Mon, Dec 9, 2024 at 8:23 PM <tomas@tuxteam.de> wrote:
>
> > (lambda (p1 p2) (< (car p1) (car p2)))
> >
> > Then you'd need a corresponding equal, because otherwise you
> > end up with things which are neither less nor equal nor greater,
> > i.e. the ordering isn't total, which is bad for sorting :)
> >
>
> `sort' assumes that the elements belong to a "strict total order", which
> means that the connectedness-axiom is true, which means that a = b is
> *equivalent to* not (a < b or a > b). So, we don't need equal.
I think we need one of = or >, which we both don't have. We just have <,
which is one too few.
Cheers
--
t
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- Re: sorted?, (continued)
- Re[2]: sorted?, Stefan Schmiedl, 2024/12/09
- Re: sorted?, tomas, 2024/12/09
- Re[2]: sorted?, Stefan Schmiedl, 2024/12/09
- Re: sorted?, tomas, 2024/12/09
- Re: sorted?, Mikael Djurfeldt, 2024/12/09
- Re: sorted?, Mikael Djurfeldt, 2024/12/09
- Re: sorted?,
tomas <=
- Re: sorted?, Mikael Djurfeldt, 2024/12/09
- RE: sorted?, Maxime Devos, 2024/12/12
- RE: sorted?, Maxime Devos, 2024/12/12
- RE: sorted?, Maxime Devos, 2024/12/12
- RE: sorted?, Maxime Devos, 2024/12/12
RE: sorted?, Maxime Devos, 2024/12/12