On Jan 16, 2009, at 12:21 PM, jmfreitas wrote:
> I need to check if a given object is an instance of a range of
> Classes,
Are you sure? It would be more idiomatic to check for duck-typing:
obj.respond_to? :my_method
or to just call it and deal with the consequences:
begin
obj.my_method
rescue NoMethodError
# deal with it
end
You already have something similar with:
case obj
when Class1, Class2
# Yippee!
else
# Drat!
end
> and I was wondering if I could do it by passing in is_a? an
> hash of classes, instead of calling is_a? for each class I have to
> compare...
> As I state in the subject (obj.is_one_of? {Class1, Class2, ...}), this
> could justify a method "obj.is_one_of?" which returns true if the
> object "obj" is an instance of Class1 or Class2...
> Is there something that I'm missing?
What are you trying to do that causes you to want this?
-Rob
Rob Biedenharn http://agileconsultingllc.com
[email protected]
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