From: daz <dooby@...10.karoo.co.uk>
Date: 2005-11-27T01:17:28+09:00
Subject: Re: Nubish questions about syntax and gems


Ross Bamford wrote:
> Hi folks.
>
> I'm getting on really well with Ruby (I've not enjoyed programming this
> much for ages :)) but I've a few (probably simple) questions I'm hoping
> you might be able to help with.
>
> 1) Is this the right way to define a method with a dynamic name?
>

http://www.outerbody.com/ruby/ri.do?class=Module&method=define_method

>
> 2) I'm struggling with boolean attributes, and question marks.
> attr_accessor (etc) won't allow me to pass those names in (I guess because
> they're illegal instance var names). I tried:
>
> attr_accessor :is_green
> alias is_green? is_green
>

Suggest to stick with something like this:

class Roo
  attr_accessor :colour
  def initialize
    @colour = :white
  end

  def is_green?
    @colour == :green
  end
end

r = Roo.new
p r.is_green?      #-> false
r.colour = :green
p r.is_green?      #-> true


>
> 3) Does this
>

Awesome answer from Dr. Black !

>
> 4) And finally, not exactly a Ruby question, but relevant here I hope?
> With a RubyGem, [...]

Pass on 4  ;)
Hope someone else can help.


daz