FYI, I believe class-inst vars should begin with lower-case by convention.

As far as the singleton's mess, what does anyone think of abstract
Singleton class with a 'default' (or 'current', 'soleInstance' it
doesn't matter, we'll just pick one) class-inst var?  And with
appropriate access, of course.

That way we could have one place where most singletons inherit from.
I say most because some might need to inherit behavior from another
class; oh well, hopefully they'll make it consistent with whatever
would be decided for Singleton.  At least something would exist to be
consistent with..



On Sat, Nov 6, 2010 at 2:00 AM, Hannes Hirzel <hannes.hirzel at gmail.com> wrote:
> On 11/6/10, Levente Uzonyi <leves at elte.hu> wrote:
>> On Sat, 6 Nov 2010, Hannes Hirzel wrote:
>>
>>> Hello
>>>
>>> The TheWorldMainDockingBar is implemented as a Singleton.
>>>
>>> To access the sole instance the method #instance is used. But we have
>>> 35 implementor of #default and 20 implementors of #current for
>>> implementing Singletons.
>>
>> There's also #soleInstance and probably a few more. Some people like this,
>> others like that.
>> Also some singletons are implemented with a class variable, others use
>> class instance variables.
>>
>>>
>>> Could somebody please change this the next time?
>>
>> You? :)
>
> Thank you for the feedback.
>
> I just tried to put the changed package Morphic into the inbox; but it
> gives me a timeout with the current connection (GPRS/EDGE).
>
> So what I did
>
> a) added a class instance variable   'Default'
> b) changed the the method #instance to #default and updated it
> accordingly (in addition instead of 'super new'  just 'self new')
> c) replaced the call to #instance with #default
> d) removed method #instance
> e) removed class variable   Instance
>
>
> --Hannes
>
>>
>> Levente
>>
>>>
>>> And TheWorldMainDockingBar is hard coded 5 places
>>>
>>> One thing we could do is to add the method
>>>
>>> mainDockingBarClass
>>>      ^TheWorldMainDockingBar
>>>
>>> to MorphicProject
>>>
>>> and then replace the hard coded
>>>
>>> TheWorldMainDockingBar
>>>
>>> with
>>>
>>> MorphicProject current mainDockingBarClass
>>>
>>>
>>> This is still hard coded but now offers the option that if I subclass
>>> MorphicProject I can have another menu there.
>>>
>>> What do you think?
>>>
>>> Hannes
>>>
>>>
>>
>>
>
>