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Re: [Help-smalltalk] Code update and class variables
From: |
Paolo Bonzini |
Subject: |
Re: [Help-smalltalk] Code update and class variables |
Date: |
Mon, 6 Sep 2010 10:30:01 +0200 |
On Mon, Sep 6, 2010 at 09:11, Holger Hans Peter Freyther
<address@hidden> wrote:
> Hi all,
>
> I am currently 'porting' (redoing) the OpenBSC/Osmocom logging framework in
> Smalltalk and while developing I see that I have one question/issue with
> updating the code.
>
> I have a LogArea which is a three tuple of (description, enabled, minLevel), I
> have a LogConfig that holds a list of areas and gives them local names.
>
> So I have something like:
>
> Object subclass: LogConfig [
> Config := LogConfig new.
>
> LogConfig class >> default [
> ^ Config
> ]
>
> addArea: anArea name: aName [
> addInstanceVariableAndSetIt
> GenerateGetMethod...
> ]
> ]
>
> and in another Package/Namespace I would do..
>
> log.LogConfig defaut addArea: localArea: #localName..
Passing note: namespaces are usually capitalized.
> Now I have two issues:
> 1.) 1 to 3: [SomeClass class addInstVarName: #boo], will add #boo
> three. Is that a bug? That should not be possible, bad things
> will happen as a result..
It's a bit ugly, but not strictly a bug. I suggest you use a
dictionary, and #doesNotUnderstand: instead of a getter, especially
because you're adding the instance variables to _all_ instances of
LogConfig rather than just one.
> 2.) FileStream fileIn: 'Log.st'. will set Config back to a new
> instance of LogConfig and all added areas are gone. What are the
> workarounds? Put Config into the Smalltalk dict? Use Notifications
> so people can add their areas again?
This would be fixed by using a dictionary and #doesNotUnderstand:, too.
Paolo
- [Help-smalltalk] Code update and class variables, Holger Hans Peter Freyther, 2010/09/06
- Re: [Help-smalltalk] Code update and class variables,
Paolo Bonzini <=
- Re: [Help-smalltalk] Code update and class variables, Holger Hans Peter Freyther, 2010/09/06
- Re: [Help-smalltalk] Code update and class variables, Paolo Bonzini, 2010/09/06
- Re: [Help-smalltalk] Code update and class variables, Holger Hans Peter Freyther, 2010/09/06
- Re: [Help-smalltalk] Code update and class variables, Paolo Bonzini, 2010/09/06
- Re: [Help-smalltalk] Code update and class variables, Holger Hans Peter Freyther, 2010/09/06
- Re: [Help-smalltalk] Code update and class variables, Paolo Bonzini, 2010/09/07
- Re: [Help-smalltalk] Code update and class variables, Holger Hans Peter Freyther, 2010/09/07
- Re: [Help-smalltalk] Code update and class variables, Paolo Bonzini, 2010/09/07