From: "Thomas B." <tpreal@...>
Date: 2008-08-30T08:00:52+09:00
Subject: Re: assignment operator that treats empty and nil as the same thing

scooterm@hotmail.com wrote:
> I would like to handle this with a *single* assignment operator, just
> like you can do in test1.

There is no such operator in Ruby. You have to make an if statement or 
something. Also remember that if the value is nil, calling empty? on it 
raises an error, so you have to check first for nil? and then for 
empty?.

You can make it a bit easier with something like this:

class Object
  def nothing?
    if nil?
      true
    elsif respond_to? :empty? and empty?
      true
    elsif respond_to? :zero? and zero?
      true
    else
      false
    end
  end
end

You won't have to check both conditions now.

TPR.
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