On Wed, 17 Jun 1998, Xavier MARIE wrote:
> Another way to look at things:
> >The Provisions of Use of the "SetBoxSize" action says:
> > "[The new X and Y values] shall be positive values and different from
> > 0"
> "positive and different from 0" implies that "positive" would include 0.
> Which is right as far as I know. In the same respect, 0 is also negative.
> Right?
The Meteorologists define a +0 as well as a -0, but this is not the
question here :-) Zero is neither a positive nor negative value.
The PoU defines "x|y >= 1" and "x,y != 0", right?
> >The description of the "Visible::OriginalBoxSize" attribute says:
> > "Negative values shall not be used".
> So this logically implies that 0 shall not be used, right?
No, it defines "x,y > -1" .
> (Otherwise it would say as above: negative and different from 0)
I think, it should say this, but it doesn't. This is why I am confused.
I think, that the description is just inconsistent.
> Not an inconsistency but a potential ambiguity in the case of loose
> reading. Clarifying is much better than changing.
We can also just leave it as it is. It is inconsistent, but everybody can
make working applications with it. Just be aware, that an attribute can have
an initial value which you can not assign to the attribute with the
appropriate "Set..." action.
Writing this somewhere is a clarification, not a technical change.
Best regards,
Andreas
-- o _ Andreas Kraft (\_|_) GMD FOKUS, kraft@fokus.gmd.de, +49 30 3463-7232 T> ] [ The sky is the limit