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View foo.rb
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class Subscriber
attr_accessor :list
 
def update_subscribers(message)
@list ||= []
@list << message['ext']['username']
@list.uniq!
@list.compact! if @list
end
 
def incoming(message, callback)
if message['channel'] == "/meta/subscribe"
update_subscribers(message)
end
 
callback.call(message)
end
 
end
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