From: E S <eero.saynatkari@...>
Date: 2005-01-30T09:48:47+09:00
Subject: Re: methods/constants/classes available in context

Jeff Davis wrote:

> I am learning Ruby and one thing I sometimes find difficult is knowing 
> what methods, constants, and classes are available in a given context.
> 
> One example was I required a module, but I didn't know everything that 
> the module contained. Is there a way to know everything that you can 
> call in a given context? All the symbols that are available?

If you want to know what a unit contains, www.ruby-doc.org is a good 
resource (or you can use ri, or line completion in irb). If you want 
your *code* to know what's available, try these:

Object#instance_variables
Object#private_methods
Object#protected_methods
Object#public_methods
Object#singleton_methods
Module#constants
Module#instance_methods
Module#private_instance_methods
Module#protected_instance_methods
Module#public_instance_methods
Kernel#global_variables
Kernel#local_variables

See ruby-doc for details on their usage and other methods.

> Regards,
>    Jeff Davis

E