Hi, I'm posting here to quickly ask you: how is one able to do something
like:

    "string".is_i?

...where "is_i?" is a method I created, on any object? This kind of goes
into monkey-patching I guess. Would I have to do:

    class String
      # My method
    end

...for every class I want that method to be available upon? So what if I
want a method called "is_i?" to be available for the String, Integer,
and Hash classes? Would I have to add that method to each of the classes
separately (like above)?

Thanks, and I apologise for the, some say, n00b'iness of this question.

Rafal

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