BitArray and BooleanArray ?

I don't know the answer but I assume you a looking for a memory
efficient way of storing booleans.  So perhaps the Bit Field layouts
discussed here [1] may be of interest considering the recent
introduction of Slots to Pharo.  Otherwise I verry vaguely remember
Bitmap used for this somewhere. Sorry I can't be more precise.

[1] http://rmod.inria.fr/archives/papers/Verw11a-OOSPLA11-FlexibleObjectLayouts.pdf

cheers -ben

On Thu, Sep 1, 2016 at 1:32 AM, Bernardo Ezequiel Contreras
<[hidden email]> wrote:

On Thu, Sep 01, 2016 at 07:45:45PM +0800, Ben Coman wrote:
> I don't know the answer but I assume you a looking for a memory
> efficient way of storing booleans.  So perhaps the Bit Field layouts
> discussed here [1] may be of interest considering the recent
> introduction of Slots to Pharo.  Otherwise I verry vaguely remember
> Bitmap used for this somewhere. Sorry I can't be more precise.

Form uses Bitmap to represent graphical stuff. Bitmap itself is a subclass of ArrayedCollection.

Peter