From: "Sean O'Dell" <sean@...[REMOVE_THE_SPAM]>
Date: 2003-08-22T07:15:33+09:00
Subject: Re: Wrapping ENV

Hal E. Fulton wrote:
> I just wrote a little piece of code. Is it useful to anyone but 
> me? And/or do you see a more elegant way to do it, or any problems
> with it?
> 
> I get tired of writing:
> 
>   ENV["this"] = x
>   y = ENV["that"]
> 
> I'd rather write:
> 
>   env.this = x
>   y = env.that
> 
> (Saving me brackets, quotes, and shift key.)
> 
> Here's the code:
> 
>   module EnvWrap
>     ENV.to_hash.each do |name,value|
>       newname = name.dup.downcase
>       define_method(newname) { ENV[name] }
>       define_method(newname+"=") {|val| ENV[name] = val}
>     end
>   end
>   
>   env = Object.new.extend EnvWrap
>   
>   p env.path
>   env.path = "wocka"
>   p env.path
>   
>   p ENV['PATH']
> 
> 
> Cheers,
> Hal

That's pretty useful!  Why not generalize it though:

class Record
   def initialize(source)
     source.to_hash.each do |name, value|
       method_name = name.downcase
       define_method(method_name) { source[name] }
       define_method(method_name + "=") { |value| source[name] = value }
     end
   end
end

env = Record.new(ENV)

p env.path
env.path = "wocka"
p env.path

p ENV['PATH']

	Sean O'Dell