From: Vicente Bosch Campos <vbosch@...>
Date: 2011-03-26T00:33:21+09:00
Subject: Re: Dynamic classes


You can give it a dynamic name with eval:

ruby-1.9.2-p180 > a = "Monkey"
 => "Monkey" 
ruby-1.9.2-p180 > eval("#{a} = Class.new")
 => Monkey 
ruby-1.9.2-p180 > b = Monkey.new
 => #<Monkey:0x00000100b37f80> 
ruby-1.9.2-p180 > 

It seemed a bit messy so I checked out also Class.new, Module.new and Module.name ( class inherits from module and hence uses the name property) but no luck :-(

I wonder whyClass.new and Module.new don't have a parameter to define the name (seems something a person would want to do).  Any ideas ? 

Regards,
V.


On Mar 25, 2011, at 3:25 PM, PsiPro wrote:

> So I am working on some metaprograming and have some questions about
> how to get what I need out of dynamic classes.
> 
> Right now I know I can define dynamic classes like so:
> a) TestClass = Class.new
> b) var_class = Class.new
> 
> These work as expected but I need the functionality provided by case
> A. Specifically I need to have the instances respond to .class
> appropriately. .class for case B returns Class, while case A responds
> TestClass
> 
> The reason I need to do this is that I want to dynamically generate
> classes, including their names. How can I accomplish this?
> 
> My desired results:
> 
> variable = Class.new
> variable.class.name == 'variable'
> 
> OR, I need to be able to assign a dynamic constant name (I know I
> know).
> 
> Any help would be appreciated.
>