geersch

// Compose a projection. 
// - Tell what type of state the projection maintains (List<WizardActivity>)
var projection = Compose<List<WizardActivity>>.Projection()
	.Initialize(() => new List<WizardActivity>()) // How do you want to initialize the state when you run the projection?
	// When a wizard was started we want to know about it.
	.When<WizardStarted>((@event, state) =>
	{
		var activity = new WizardActivity(@event.CorrelationId.Value, @event.TimeStamp);
		if (!state.Contains(activity))
			state.Add(activity);