From: Gavin Kistner <gavin@...>
Date: 2007-07-18T14:22:01+09:00
Subject: Re: syntactic sugar buzz

Jeff Pritchard wrote:
> One thing I keep running into over and over and over and over that I
> wish there was some syntactic sugar for is the whole business of calling
> a method on an object, and doing something intelligent if the object is
> nil.
> 
> If I have a string of stuff like:
> blah = foo.bar.split
> 
> what if bar is nil?

Well, yes. What if bar is nil? Do you want blah to be nil? An empty 
array?

I personally go with:
  blah = foo.bar.split unless foo.bar.nil?

But really, I think the answer to your question (how do I do what I 
want) is the answer to your question (what do I want to do under this 
case). It seems that there is no good general answer for "perform the 
rough equivalent of method XYZ on nil and give me a reasonable result".


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