Inheritance v passing object through the constructor

ruby-talk
1

Hi,

Could anyone please tell me what the difference would be of inheriting
a class versus passing that class\object through the initialize
method?

class ErrorBox < Box

end

v

box ||= Box.new

class ErrorBox
  def initialize(box)

  end

end

And why would I do one over the other?

Thanks

Aidy

2

Try googling "inheritance vs delegation" and "inheritance vs
composition"
Here is a discusin from Perl (PerlMonks - The Monastery Gates?
node_id=278375), looks to cover the
area pretty good

Artima has a lot of good info, here is an article on inheritence vs
composition (similar to delegation),
http://www.artima.com/designtechniques/compoinh.html

cheers

···

On Jul 7, 7:37 am, aidy <aidy.le...@googlemail.com> wrote:

Hi,

Could anyone please tell me what the difference would be of inheriting
a class versus passing that class\object through the initialize
method?

class ErrorBox < Box

end

v

box ||= Box.new

class ErrorBox
  def initialize(box)

  end

end

And why would I do one over the other?

Thanks

Aidy