From: John Sanders <john@...7.com>
Date: 2011-06-06T02:35:30+09:00
Subject: Odd module dynamic method behaviour [doh!]

OK found it

On 2011-06-05 17:17:01 +0100, John Sanders said:

> Hi,
> 
> I've been defining modules for mixins with dynamic methods - here is a 
> test module:
> 
> module Odd
>   A_HASH = Hash[:a=>1, :b=>2]
>   AN_ARRAY = [:c, :d]
> 
>   puts "hash keys: #{A_HASH.keys}"
>   puts "array values: #{AN_ARRAY}"
> 
>   A_HASH.keys.each do |k|
>     puts "defining #{k}"
>     define_method(k) do
>       puts "#{k}"
>     end
>   end
>   AN_ARRAY.each do |k|
>     puts "defining #{k}"
>     define_method(k) do
>       puts "#{k}"
>     end
>   end
> end
> 
> puts "methods: #{Odd.instance_methods}"
> 
> - The issue is that the A_HASH.keys code does not fire but the 
> AN_ARRAY.each code does as the following shows:
> 
> hash keys: [:a, :b]
> array values: [:c, :d]
> defining c
> defining d
> methods: [:c, :d]
> 
> Any ideas? - I am using ruby 1.9.2 pl180
> 
> 
> Regards,
> 
> John