title: JavaFx Bindings : is there any way to bind value to observable List?
body: <p>i have table view it's contents is observable list that contains numbers and i have a text field that should display the sum of these values in the table is there any way to bind this text fields to sum of the number properties .
  note : the user may edit the values in this list , may add more elements , may delete some element how can i bind the sum of these numbers correctly using javafx binding instead of doing this by the old fashion way iterate over the list and sum the numbers manually and every change reiterate over it again . </p>