method

add_observer

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add_observer(observer) public

Add observer as an observer on this object. observer will now receive notifications.

# File lib/observer.rb, line 123
  def add_observer(observer)
    @observer_peers = [] unless defined? @observer_peers
    unless observer.respond_to? :update
      raise NoMethodError, "observer needs to respond to `update'" 
    end
    @observer_peers.push observer
  end

add_observer

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