Re: [Pharo-users] Package extension. Adding instance variables to classes

[Alidra Abdelghani via Pharo-users]

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Hi Pavel,

Thank you for your answer.
I actually didn’t know about this mechanism. 
I think it is will do the job :)
 I have probably to rewrite some parts pf my code to access my variables 
through privateState.  no?


Thanks again
Abdelghani
> On 07 May 2018, at 13:15, pharo-users-requ...@lists.pharo.org wrote:
> 
> 
> Message: 1
> Date: Mon, 7 May 2018 13:43:56 +0200
> From: Pavel Krivanek <pavel.kriva...@gmail.com 
> <mailto:pavel.kriva...@gmail.com>>
> To: Any question about pharo is welcome <pharo-users@lists.pharo.org 
> <mailto:pharo-users@lists.pharo.org>>
> Subject: Re: [Pharo-users] Package extension. Adding instance
>       variables to classes
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> 
> 2018-05-07 12:25 GMT+02:00 Alidra Abdelghani via Pharo-users <
> pharo-users@lists.pharo.org <mailto:pharo-users@lists.pharo.org>>:
> 
>> 
>> 
>> ---------- P?eposlan? zpr?va ----------
>> From: Alidra Abdelghani <alidran...@yahoo.fr <mailto:alidran...@yahoo.fr>>
>> To: pharo-users@lists.pharo.org <mailto:pharo-users@lists.pharo.org>
>> Cc:
>> Bcc:
>> Date: Mon, 7 May 2018 11:25:49 +0100
>> Subject: Package extension. Adding instance variables to classes
>> Hi,
>> 
>> I am working on a package named ClassNamesAnalyzer and I need to add code
>> to third party classes in other packages (for instance the FAMIX-Core
>> package).
>> ?Extending? third party classes with methods is easy; I just need to
>> categorise my methods under the *ClassNamesAnalyzer protocole so that
>> loading my package will load them in the image.
>> However, if I want to add instance variables to theses classes, they are
>> not there when I load the package in a new image.
>> 
>> *So my question is* : is there a way to include instance variables
>> addition to other packages in my package?
>> 
> 
> Currently not, you should use privateState
> 
> 
>> *Another question is* : is it good practice to add instance variables to
>> classes in third party packages and is there a way to avoid it (because I
>> am not very confortable with that idea)?
>> 
> 
> It is not, see FAMIXContainerEntity>>#definedAnnotationTypes how this issue
> is currently being solved using the privateState.
> 
> Cheers,
> -- Pavel
> 
> 
>> 
>> Thanks in advance,
>> Abdelghani

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