diff
UK['dɪf] US['dɪf]
abbr.differential differential (of);difference different;differ different;differentiator differentiator
redis SDIFF command syntax
Function:Returns all members of a set, which is the difference between all given sets. Keys that do not exist are treated as empty sets.
Syntax:SDIFF key [key ...]
Available versions:>= 1.0.0
Time complexity:O(N), N is the sum of the number of members of all given sets.
Returns:The list of intersection members.
redis SDIFF command example
redis> SMEMBERS peter's_movies 1) "bet man" 2) "start war" 3) "2012" redis> SMEMBERS joe's_movies 1) "hi, lady" 2) "Fast Five" 3) "2012" redis> SDIFF peter's_movies joe's_movies 1) "bet man" 2) "start war"