From: Chad Fowler <chadfowler@...>
Date: 2003-01-12T14:28:51+09:00
Subject: Re: Instance vars as arguments to initialize()?

Jim Bob wrote:

>In article <slrnb202t7.l1k.invalid@mojo.chicken.com>, Jim Bob wrote:
>  
>
>> Wouldn't it be neater to be able to do "def initialize(@a, @b,
>> @c);end" and be done with it?
>>    
>>
>
>Well, to follow up to myself, I would have to say that wouldn't make a
>whole lot of sense. initialize would have to be some kind of "special"
>method to act like that, much more so than it is now.
>
>I've solved my "problem", such as it was, by writing a little Vim script
>(using Ruby!) that, when called on a line like "A b c", builds a 
>	class A
>		def initialize(b, c)
>			@b = b
>			@c = c
>		end
>	end
>-type skeleton out of it. It was fun, too.
>
>  
>
Another fun little Ruby-ism is that you could use "Struct" as a shortcut 
for constructing the initializer as in the following example:

====BEGIN====
Blah = Struct.new("Blah", :a, :b, :c)

class Blah
  def extra_method
    puts "Here's some non-instance-var behaviour"
  end
end

x = Blah.new("Hello World",Math::PI,["an", "array", "of", "strings"])
x.extra_method  #=> prints "Here's some non-instance-var behaviour"
puts x.a  #=> prints "Hello World"
====END====

Chad