From: "Földes László" <lists@...>
Date: 2012-04-11T19:42:24+09:00
Subject: Re: A Beginner's Question about Metaprogramming

Phil Stone wrote in post #1055939:
>
> So if I understand this correctly, the singleton_methods are just the
> class methods. Is that right?
>

No. Singleton methods are methods that exist only for a single object.

> ary = Array.new(1..3)
> ary.size
=> 3
> def ary.size
*   23748236478
* end
> ary.size
=> 23748236478

I have redefined ary's size method, however this did not change the 
parent class (Array) size method. New Arrays will have the 'default' 
size method.

'size' is a singleton method:

> ary.singleton_methods
=> [:size]

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