When there is no relation store empty array with index set to zero
Closes DaVinci#116 (closed).
Currently in such cases we store an array of nan
with size 1. This implementation stores empty array with size 0. This way size indicates that there is not relation with added benefit of saving space by not storing nan
.
To be tested with: DaVinci!895 (merged)
Edited by Abhijit Mathad