Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

2017-06-07 14:53 GMT+02:00 Steven Costiou <steven.costiou@kloum.io>:

I want to do the following:

B adoptInstance: a

It does'nt work, for what i understand it is because the format of the classes are different (B has an inst var and A has not).

Yes, #adopt checks class format. Use need to use #become to achieve what you want: a becomeForward: B new