From: Frederick Cheung <frederick.cheung@...>
Date: 2008-07-01T19:12:15+09:00
Subject: Re: Dynamic Variables


On 1 Jul 2008, at 10:52, Igal Koshevoy wrote:

> Marc Heiler wrote:
>> Is there any way in ruby to create dynamic variables?
>>
>> counter = 52
>> box#{counter} = "cat and dogs"
>>
>> There would be then a new variable
>> box52
>>
>> Note that this is not a question whether someone should do it or  
>> not -
>> this is solely whether it is doable or not. Until today I thought  
>> it is
>> somehow possible with eval but I failed, so I assume it is not  
>> possible.
>>
> irb(main):010:0> counter = 52
> => 52
> irb(main):011:0> eval "box#{counter} = 'cat and dogs'"
> => "cat and dogs"
> irb(main):012:0> box52
> => "cat and dogs"
>
Although that doesn't work outside of irb. (although you can change  
the value of an existing local variable like that)
See also http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/a954f8aaf698a0b9/e1c761b71b63b82e?#e1c761b71b63b82e

Fred