From: Josh Cheek <josh.cheek@...>
Date: 2011-09-04T08:22:49+09:00
Subject: Re: arrays(setters and getters)

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On Sat, Sep 3, 2011 at 6:16 PM, jack jones <shehio_22@hotmail.com> wrote:

> # whats wrong with that
> class Whatever
>  attr_accessor :array
>  @array
>  def initialize
>    @array = []
>    @array = ["apple", "banana", "peach"]
>  end
>  def array []= (i,value) # setter
>    @array[i] = value
>  end
>  def array[] (i) #getter
>    @array[i]
>  end
> end
>
> shehio = Whatever.new
> puts shehio.inspect
> puts shehio.array
> puts shehio.array[0]
> puts shehio.array[1]
> puts shehio.array[2]
> shehio.array[0] = 1
> shehio.array[0] = 2
> shehio.array[0] = 3
> puts shehio.array[0]
> puts shehio.array[1]
> puts shehio.array[2]
>
> --
> Posted via http://www.ruby-forum. <http://www.ruby-forum.com/>



whatever.array returns the array object, then whatever.array.[]=(1,2) is
invoked on the array object, you can't define that from your whatever class
unless you define it on the array itself, in the initialize method or
something.

Not to worry, though, array already implements that interface and it does
what you're trying to define. Just do this:

class Whatever
 attr_accessor :array
 def initialize
   @array = ["apple", "banana", "peach"]
 end
end

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