From: Ken Bloom <kbloom@...>
Date: 2007-12-12T09:10:02+09:00
Subject: Re: opposite .nil?

On Tue, 11 Dec 2007 15:03:53 -0500, Andrew Stone wrote:

> Note:  parts of this message were removed by the gateway to make it a
> legal Usenet post.
> 
>> 1) No such opposite-of-nil? method exists. If you want it, add it.
>>
>>
> Thanks for actually answering my question.  Much appreciated.
> 
> 2) In the particular example above (which I realize is just an
>> example) you could write that as:
>>
>>  def should_this_by_done?
>>    am_I_sure? unless !my_object || my_object.var.nil?
>>  end
>>
>> But, of course, that just moves the negation.
>>
>>
> Sure, I was just looking for a more readable construct.  Thanks again
> for your reply.

def should_this_be_done?
  am_I_sure?  && my_object  && !my_object.var.nil?
end

Here's a more readable construct:

def should_this_be_done?
  am_I_sure?  and my_object and not my_object.var.nil?
end

You're not forced to program Ruby like it's C.

--Ken

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