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Sorted Sets
Victor Rodrigues edited this page Aug 8, 2013
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If you want to have friends sorted by some weight (say, BFF: 100, family: 80, colleague: 40, …), you can use a sorted_set for that.
friends = Hari('user#42').sorted_set(:friends)
=> #<Hari::Keys::SortedSet:0x007fb5c42a6df0>
This returns an object to call Redis sorted_set
operations. If you want instead all the sorted set members, call it with the hashbang !
Hari('user#42').sorted_set!(:friends_ids)
=> ["bill", "john", "mark"]
These are the operations you can do with a sorted set in Hari:
friends.add 10, 'john', 30, 'bill', 50, 'jack'
friends << [10, 'john', 30, 'bill', 50, 'jack']
friends.count # also .size or .length
friends.empty?
friends.one?
friends.many?
friends.delete 'bill', 'jack'
friends.score 'john'
friends.include? 'john'
friends.rank 'john' # also .ranking or .position
friends.revrank 'john' # also .reverse_ranking
# or .reverse_position
friends.members