From: Jari Williamsson <jari.williamsson@...>
Date: 2008-02-27T16:59:31+09:00
Subject: Re: open classes and language extensibility

Martin DeMello wrote:
> I was pondering the whole "monkeypatching" debate, and I realised that
> disallowing modification of core classes removes an extremely
> important property of the language - the ability to have extension
> code you write be "on par" with the base language. This is often
> touted as one of the big advantages of lisp and forth, and it would be
> a shame to lose it in ruby. For instance, lets say your code relied
> heavily on rot13. If you couldn't add a #rot13 method to String
> because String was a core class, you'd be forced to say rot13(string),
> or even worse, Util.rot13(string). You'd end up with expressions like
> rot13(string.capitalize.squeeze), where it is very clear which methods
> come from "base ruby" and which are yours.

I think this statement is incorrect. You CAN create a string with a 
#rot13 method, without adding that method to the core class.


Best regards,

Jari Williamsson