but layoutProperties are not immutable so if you receive an instance of
NullLayoutProperties (singleton), and you do something like this:
myMorph cellInset: 5, you has to check for correct properties anyway… that’s
why is implemented as this:
cellInset: aNumber
"Layout specific. This property specifies an extra inset for each cell
in the layout."
self assureTableProperties cellInset: aNumber.
self layoutChanged.
I do not think answering a null object here is good… it will cause infinite
problems and you will need to check for correct properties anyway.
In any case, I would reject such a change (specially at this moment).
Esteban
> On 01 Feb 2016, at 08:20, stepharo <steph...@free.fr> wrote:
>
> A good solution is to have
> share by default and instance-based when needed.
>
> For that
> use a classVariable to instantiate only one NullLayoutProperties
> use an instance variable that points to it by default
>
> one demand change the instance variable to point to a new created instance
>
> => you can remove all the ifNil:
>
>
>
