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On Wed, 16 Jan 2019 at 17:16, Loïc Pagès <loic.pa...@inra.fr> wrote:
> Dear Pharo users,
>
> I develop software dedicated to the simulation of plant development and
> 3D architecture.
>
> In the past, I used Java,
but I am very interested in translating code
> in Pharo. I appreciated very much the language and the course.
>
> I have a question for you all :
>
> During plant development (ontogeny), new organs appear, that are
> gradually tranformed. For example, a bud can make a flower, and then a
> fruit.
>
> Organs are conveniently modelled as classes. During the course, I
> learned that it was better to make several classes (bud, flower, fruit)
> instead of a "fat class" such as "reproductive organ" with many
> attributes and stages (bud stage, flower stage, fruit stage). I wonder
> how to transform an object into another one, to represent for example
> the fact that the flower may become a fruit.
>
> Maybe a naive question ?
>
Maybe #become: ...
https://gbracha.blogspot.com/2009/07/miracle-of-become.html
but it might be a misuse for your purpose. The following book will provide
some good insights...
https://www.amazon.com/Design-Patterns-Smalltalk-Companion/dp/0201184621
cheers -ben
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