From: Robert Klemme <lists@...>
Date: 2012-04-11T22:27:25+09:00
Subject: Re: New to Ruby, tutorial gives wrong example.

Roger McDonald wrote in post #1055979:
> Wow, thank you all for replying, it is really appreciated.

You're welcome!

> A question if I may please, and I am not sure I'm using the right
> terminology here:
> With the example above from karatedog, where a Class is created with
> variables in a certain order, does that order and number of variables
> have to be retained where ever the class is called, or, could one or

You do not "call" classes, you only call (or "invoke") methods.

> more variables be referenced say only the y, x,.
> this is interesting, I must go and experiment
> thank you all.

The order in which you invoke setters (methods which end in "=") is 
completely at your own discretion.

Btw. if you are lazy and only need a data container you can also use 
OpenStruct:

irb(main):005:0> require 'ostruct'
=> true
irb(main):006:0> o=OpenStruct.new(a:100)
=> #<OpenStruct a=100>
irb(main):007:0> o.a
=> 100
irb(main):008:0> o.b=77
=> 77
irb(main):009:0> o
=> #<OpenStruct a=100, b=77>

Kind regards

robert

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