From: Ross Bamford <rosco@...>
Date: 2005-11-27T05:12:28+09:00
Subject: Re: Nubish questions about syntax and gems

On Sat, 26 Nov 2005 16:14:24 -0000, daz <dooby@d10.karoo.co.uk> wrote:

>
> 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
>

Cheers :) I was missing quite a bit there...

>>
>> 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
>

Definitely agree, I prefer to keep as much immutable as possible (too many  
years of Java I guess :P). I just thought there might be a convenient way  
to do setters, and keep the Rdoc [RW] or whatever identifiers correct at  
the same time.

>
>>
>> 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
>

Thanks for your reply :)

-- 
Ross Bamford - rosco@roscopeco.remove.co.uk