Method: FSM::Observer#once_on

Defined in:
lib/fsm-0.0.0/observer.rb

#once_on(etype = Event::Any, fstate = ANY, &hook) ⇒ Object 



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# File 'lib/fsm-0.0.0/observer.rb', line 96

def once_on etype = Event::Any, fstate = ANY, &hook
  on etype, fstate, &hook.extend(Once)
end