ReQL command: set_difference
Command syntax
array.set_difference(array) → array
Description
Remove the elements of one array from another and return them as a set (an array with distinct values).
Example: Check which pieces of equipment Iron Man has, excluding a fixed list.
r.table('marvel').get('IronMan')[:equipment].set_difference(['newBoots', 'arc_reactor']).run(conn)
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https://rethinkdb.com/api/ruby/set_difference/