From: Marko Schulz <in6x059@...>
Date: 2001-04-23T16:30:39+09:00
Subject: [ruby-talk:14059] Re: RCR: getClassFromString method

On Mon, Apr 23, 2001 at 06:40:08AM +0900, Phil Tomson wrote:
> 
> [ Getting a Class by its name as String ]

You could simply use an eval:

  module ObjectSpace
    def ObjectSpace.class(name)
      eval(name)
    end
  end


You might want to add some error checking:


  module ObjectSpace
    def ObjectSpace.class(name)
      return nil if not (validClassname?(name) and eval(name).kind_of? Class)

      eval(name)
    end

    def ObjectSpace.validClassname?(name)
       name =~ /^[A-Z][a-zA-Z0-9]*$/
    end
  end

If you are concerned about performance you could remove the doubled
eval, but then again if you are concerned about performance you should
implement it native anyway.

-- 
marko schulz

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