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gregoryyoung/gist:3316744

Created August 10, 2012 18:53
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val currentState = events.foldLeft(0)(state, event) => event match {
         case d:InventoryItemDeactivated =>  Deactivated(d.Id, d.Reason)
         case c:InventoryItemCreated => Created(c.Id, c.Name)
         case a:InventoryItemAudited => Audited(a.Id, a.Outcome, a.EndValue)
}
//or extractors ....
//can put logic right there as well lambdas ...
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