Good day Everyone,

Please, is there a way to index a RollinWindow? For lists, it's, say, Dlist[ : ], if ‘Dlist’ is a list. Thus, for six trading day's before now, I expect something like Roll[:6], where ‘Roll’ is a RollingWindow object. However, I'm finding it difficult, as I can only access Roll[0], Roll[1], etc. 

I have attached a backtest for anyone who wants to render some help.