I am trying to figure out the most efficient way (lowest execution time) to filter two lists of objects, keeping only a sublist of list A whose objects are not in list B.
One list is coming form an external API and the other list is coming from my Backendless DB.
The way I am doing it now is creating two lists of strings using the map block,
then using the filter block.
Is there a way with fewer steps where I can simply use the filter block on a list of objects and it will return the objects that do not appear with identical properties in the other list?