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Replies for: I needed to add a method to the Ruby File class. I found out you can do this by: file = File.new(...) def file.new_method do_stuff end

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Drew Bragg •

If you need/want the method on the File class and not just the instance you could do:

class File
  def new_method
    # do_stuff
  end
end

file = File.new(...)
file.new_method