From: James Edward Gray II <james@...>
Date: 2007-02-04T04:01:46+09:00
Subject: Re: Performance hit of define_method

On Feb 3, 2007, at 2:34 AM, Robert Dober wrote:

> But  I realize that I do not know how to distinguish between Core
> and STL.

If you can use it without a require, it's core Ruby.  Array,  
Enumerable, and Hash are examples.

If it comes with Ruby (no extra install), but you must require it to  
use it, it's a standard library.  OpenStruct, Logger, and WEBrick are  
examples.

Hope that helps.

James Edward Gray II