method

add_observer

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add_observer(observer, func=:update) public

Add observer as an observer on this object. observer will now receive notifications. The second optional argument specifies a method to notify updates, of which default value is update.

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# File lib/observer.rb, line 124
  def add_observer(observer, func=:update)
    @observer_peers = {} unless defined? @observer_peers
    unless observer.respond_to? func
      raise NoMethodError, "observer does not respond to `#{func.to_s}'"
    end
    @observer_peers[observer] = func
  end

add_observer

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