From: "Pavel R." <pavel.rosputko@...>
Date: 2010-12-22T00:56:52+09:00
Subject: Re: Regexp, String, Symbol literals' object_ids

Example:

class A
  def m
    a,b,c,d = data.unpack('NNvv')
    e,f,g,h = a.unpack('vNNv')
    # and so on ...
    # do something with data
  end
end

To prevent 'NNvv' again and again I can assign a constant

class A
  Format_NNvv = 'NNvv'
end

and use it.

But there's many different 'NNvv', 'vNNv', 'a*c', ... in my code so I 
need to assign all them to constants. This approach implies a large 
section of assigning constants.

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