[help] Need help with this issue about recursive-open-struct HOT 1 CLOSED

When you subclass ROS, it uses your subclass for the children instances. Since you changed the method signature of initialize (caught because the arity changed from 2 to 1), it failed when it tried to create a new Config instance internally (why the exception happened on config.rb:5 where you override initialize)

You probably want to use composition and not a subclass that changes the method signature of initialize. Either create a function that accepts a filename and returns an ROS, or create another type called Config that has an accessor method that returns the ROS data structure.

class Config
  def initialize(filename)
    @filename = filename
    @config = RecursiveOpenStruct.new(YAML.load_file(@filename), {recurse_over_arrays: true, preserve_original_keys: true})
  end

  attr_accessor :config
end

my_config = Config.new("config.yml")

my_config.config
# => returns the ROS

my_config.config.devices
# => should return the devices sub-ROS

If you don't want the extra accessor in there, you could use a delegator pattern so that your Config forwards messages it doesn't implement on to the ROS structure.

from recursive-open-struct.