From: Ken Bloom <kbloom@...>
Date: 2006-09-10T11:45:08+09:00
Subject: Re: Combine @item.foo.nil? || @item.foo.empty? ?

On Sat, 09 Sep 2006 06:53:59 +0900, Joel VanderWerf wrote:

> Matthew Moss wrote:
>>> tr do
>>>   td @item.foo
>>> end unless (@item.foo.nil? || @item.foo.empty?)
>>>
>>> Is there a way to combine these two OR clauses into one?
>> 
>> 
>> Define a method on the class of foo?
>> 
>> class Foo
>          ^^^
>          Object
>>   def nil_or_empty?
>>      return nil? || empty?
>>   end
>> end
> 
> Otherwise it won't be defined when foo==nil.
>

So define as follows:

class NilClass
  def nil_or_empty?
    true
  end
end

-- 
Ken Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/