From: Robert Klemme <shortcutter@...>
Date: 2007-01-21T03:10:06+09:00
Subject: Re: Proper way to either create or append to an array?

On 20.01.2007 18:55, Adam Block wrote:
> Hi all.
> 
> Let's say I want to either create a new named array or append to that
> array if it already exists. Is there a more elegant way of doing the
> following?
> 
>>> @foo[:bar].nil? ? foo[:bar] = ["snafu"] : foo[:bar] << "snafu"

Since you're using a Hash the block constructor is the most elegant 
solution IMHO:

def initialize
   @foo = Hash.new {|h,k| h[k]=[]}
   ...
end

def other_method
   ...
   @foo[:bar] << "snafu"
   ...
end

Kind regards

	robert