From: patrick-may@... (Patrick May)
Date: 2002-05-02T05:50:13+09:00
Subject: is this FAQ material? -> adding instance methods to an object....

I was trying to add instance methods to an object.  I figured this out
by looking at some library source, but I had problems finding this
info on ruby talk or in the FAQ.

I know that I've seen this question answered on the list before, but
it's hard to narrow down to it.  The search terms "define instance
methods object" touches on a wide variety of messages :-)

I didn't see it when I looked at the FAQ at
http://www.rubycentral.com/faq/rubyfaq.html

Is this something that is worth a FAQ entry?  Something like:

* How can I define methods on an object at run time?

class MyObject
    @name = "name"
end

anObject = MyObject.new
def anObject.name
    @name
end

puts anObject.name           # <= returns "name"

# example from inside a method definition:

def get_object_with_name
    anObject = MyObject.new
    eval <<-END
        def anObject.name
            @name
        end
    END
    anObject
end

foo = get_object_with_name
puts foo.name                # <= returns "name"

~ Patrick