From: "Peña, Botp" <botp@...>
Date: 2008-09-03T11:05:34+09:00
Subject: Re: Class.descendant_of?

From: Ben Johnson [mailto:bjohnson@contuitive.com] 
# Is there a method that will return true if the class is a 
# descendant of that class?

descendant is quite a generic term ;)

compare,

B.ancestors.map {|b|  [b,  B < b]}
#=> [[B, false], [A, true], [Object, true], [Kernel, true]]

B.ancestors.map {|b|  [b, B.superclass == b]}
#=> [[B, false], [A, true], [Object, false], [Kernel, false]]

kind regards -botp