From: Gregory Brown <gregory.t.brown@...>
Date: 2007-01-22T03:05:38+09:00
Subject: Re: module global variables

On 1/21/07, Gregory Brown <gregory.t.brown@gmail.com> wrote:
> On 1/21/07, Stefano Zacchiroli <zack@bononia.it> wrote:
> > On Mon, Jan 22, 2007 at 02:52:58AM +0900, Trans wrote:
> > > > Am I using the wrong tool for my end?
> > > Try a constant.
> >
> > Already tried. I can't stand the warning and I can't blame the compiler
> > for outputting it: a constant would definitely be the wrong tool :)
>
> why do you need this in your module?  Is it going to be mixed into
> something or no?

Something like this might work:

>> module A
>>   def foo
>>     A.bar += 10
>>   end
>>   module_function
>>   def bar=(other)
>>     @bar = other
>>   end
>>   def bar
>>     @bar
>>   end
>> end
=> nil
>> A.bar = 20
=> 20
>> class B
>>   include A
>>   def apple
>>     foo
>>   end
>> end
=> nil
>> c = B.new
=> #<B:0x31485c>
>> c.apple
=> 30
>> c.apple
=> 40
>> c.apple
=> 50
>> class C
>>   include A
>>     def banana
>>        foo + 10
>>     end
>>   end
=> nil
>> d = C.new
=> #<C:0x1cc1b4>
>> d.banana
=> 70
>> d.banana
=> 80
>> A.bar
=> 70