Trans
12/14/2007 3:28:00 AM
On Dec 13, 5:30 pm, Paul <pdavi...@gmail.com> wrote:
> Let's say I have the following module:
>
> ------------------------
> module Parenting
>
> def add_child(a_child)
> self.children.push(a_child)
> end
>
> def delete_child(a_child)
> self.children.delete(a_child)
> end
>
> def children
> # need to implement
> but is there a programtaic way to declare this?
> end
>
> end
> ------------------------
>
> Is there a way to enforce that the 'children' method is understood in
> any class which includes this module? Or do I simply rely on a
> comment, as above
You general just make a comment in the module docs. Ie.
# The including module must define #children.
#
module Parenting
...
end
Under certain conditions you might provide a default, or raise an
error, eg.
module Parenting
def children
raise NoMethodError
end
end
T.