From: ts <decoux@...>
Date: 2006-03-29T23:50:56+09:00
Subject: Re: Ruby Black Belt

>>>>> "J" == James Edward Gray <james@grayproductions.net> writes:

J> Robert Dober was kind enough to point out that RDoc may have led me  
J> astray here.  You can call Kernel methods like class methods and they  
J> do not show up in the list of instance_methods().  They are mixed  
J> into Object though, right?  Can someone clue me in here?

 a global function is a Kernel module function : this mean that it's a
 *private* method (this is why #instance_methods don't display it) and a
 public singleton method 

moulon% ruby -e 'module M def f() end; module_function :f end; p M.instance_methods'
[]
moulon% 

moulon% ruby -e 'module M def f() end; module_function :f end; p M.private_instance_methods'
["f"]
moulon% 

moulon% ruby -e 'module M def f() end; module_function :f end; p M.singleton_methods'
["f"]
moulon% 


Guy Decoux