[Vm-dev] Recreating live coding in CPython 3.5

[Nicolas Cellier]

2017-10-11 21:56 GMT+02:00 Jan Vrany <jan.vrany at fit.cvut.cz>:

>
> On Wed, 2017-10-11 at 21:49 +0200, Bert Freudenberg wrote:
> >
> > On Wed, Oct 11, 2017 at 9:32 PM, Jan Vrany <jan.vrany at fit.cvut.cz>
> > wrote:
> > >
> > > > Indeed such feature is essential for live coding.  I will have to
> > > add
> > > > it to my implementation thanks.
> > >
> > > I don't think become: is essential. Smalltalk/X for instance does
> > > not
> > > use #become: yet it still provides live coding (in my opinion).
> >
> > Do you know how instances are reshaped without become in Smalltalk/X?
>
> Yes, it's very simple: they are not reshaped at all :-)
>
> Jan


Then does that mean that
- classes are not mutated, but that a new one is created, and old objects
are still pointing on old classes,
- or that mutation is forbidden as long as instances or sub-instances exist
(like in Smalltalk V if I remember)
- or that one may expect catastrophic consequences when reshaping?
Nicolas
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