Property :: currentPosition - Current index property

The function returns the position of the currently located instance in the collection according to the selected access key. The property returns a non negative value when an instance has been located in the property handle (e.g. locateKey()) regardless whether the instance has been selected or not.

When no instance is located in the property handle, the property returns -1.

Since the position might change when instances are inserted or removed from the collection, the current index can be used for accessing instances (get(iPosition)) in a limited way, only (e.g. within a transaction).