you can probably always just do something like: def no_items? !items.present? end def items # something lone end memoize :items, ttl: 60,

you can probably always just do something like: def no_items? !items.present? end def items # something lone end memoize :items, ttl: 60, max_size: 10` just makes sure the expensive operation results in a truthy value, then add some sugar for the falsey value, done.