From: Patrick Li <patrickli_2001@...>
Date: 2008-08-21T05:28:09+09:00
Subject: Dynamically Create Class. (or. Why is eval() messy?)

Hi,
I'm trying to create a utility method that will automatically create a
class for me, given a classname. But I can't find a way around having to
use eval().

This is what I'm doing right now:

def createClass(className)
  eval(<<-EOS)
    #{className} = Class.new do
      #bla bla bla
    end
  EOS
end

but I really don't like eval() and would like to avoid it, if at all
possible.

Is there a reason, that Ruby doesn't support something like this: Maybe
because it's inconsistent with something, or because it's really hard?

className = "MyClass"
methodName = "myMethod"

class *className
  def *methodName
    puts "yay!"
  end
end

Also, I find eval() code really messy. Though I'm not sure why. I think
I don't like it, because my editor (IntelliJ) doesn't do syntax
highlighting for strings. Do you guys know of any editors that will
syntax highlight a eval() string for you?
-- 
Posted via http://www.ruby-forum.com/.