Re: Toggle appointment notification

[Jean Louis]

* daniela-spit@gmx.it <daniela-spit@gmx.it> [2020-12-02 06:05]:
> 
> 
> 
> > Sent: Wednesday, December 02, 2020 at 3:47 AM
> > From: "Michael Heerdegen" <michael_heerdegen@web.de>
> > To: help-gnu-emacs@gnu.org
> > Subject: Re: Toggle appointment notification
> >
> > daniela-spit@gmx.it writes:
> >
> > > Would it be possible to clarify this in the defun description string,
> > > saying:
> > >
> > > ARG is positive (ARG > 0), otherwise off.
> >
> > Would you really want to add that for every command where it could
> > matter?  That would be a lot.
> 
> I see.
> 
> > BTW, it wouldn't clarify the issue in my opinion: since +0 is probably
> > not negative, and when we assume it is different from 0, i.e. not `=' 0,
> > I would guess it could be > 0, so the above sentence would still not
> > make it clear how a hypothetical +0 would behave.
> 
> How about putting a note in the Emacs Tutorial.  It is short and every new 
> user
> reads. And say that by positive we always mean greater than zero.  In french
> speaking countries, zero is considered positive.

In my school in Europe we learned that -1 is first negative number.

But in programming one can define new context. When it says in
documentation ARG is positive (ARG > 0) it give definition what it
means in that specific context and so I understand it and use in that
definition. Dictionary says: 9. positive -- (greater than zero;
"positive numbers")

Definition not necessarily need to be related to mathematical
comparisons.

While 0 may be positive in comparison to negative numbers it is
definitely practically not positive as if there is nothing, there is
nothing. If you have one apple you have the apple, if you don't have
it is not there. There are different concepts.