From: Yohanes Santoso <ruby-talk@...>
Date: 2002-06-20T14:29:31+09:00
Subject: Re: can super call a method multiple classes higher in the hierarchy?

Ian Macdonald <ian@caliban.org> writes:

> Hi,
> 
> Am I right in thinking that if I call super from method foo in class
> Bar, it does not matter that no identically named method is defined in
> Bar's parent class, just as long as an identically named method _is_
> defined in the grandparent or an even further removed ancestor class
> of Bar?

That's what inheritance in OOP does.

irb(main):001:0> class A
irb(main):002:1> def hallo
irb(main):003:2> puts "HALLO FROM A"
irb(main):004:2> end
irb(main):005:1> end
nil
irb(main):006:0> class B < A
irb(main):007:1> end
nil
irb(main):008:0> class C < B
irb(main):009:1> def hallo
irb(main):010:2> super 
irb(main):011:2> puts "HALLO FROM C"
irb(main):012:2> end
irb(main):013:1> end
nil
irb(main):014:0> C.new.hallo
HALLO FROM A
HALLO FROM C
nil

YS.