Ruby on Rails

Iazel wrote in post #1157000:
> However, if you still don't like this, you can just check if the last
> parameter is a Fixnum (duck typing style) and act accordingly:
>
> x = n.respond_to?(:to_int) ? n.to_int : g(c)

Isn't this a bit risky? After all, Card the class of n derives from
ActiveRecord::Base, i.e. a class, which I can't control. Now imagine
that in a new version of Rails, this class would receive a to_int method
(for example, to implicitly convert a model object into the id of the
object). This would break my code.

Ronald

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