SDIFF
Syntax
SDIFF key [key ...]
- Available since:
- 1.0.0
- Time complexity:
- O(N) where N is the total number of elements in all given sets.
- ACL categories:
-
@read,@set,@slow,
Returns the members of the set resulting from the difference between the first set and all the successive sets.
For example:
key1 = {a,b,c,d}
key2 = {c}
key3 = {a,c,e}
SDIFF key1 key2 key3 = {b,d}
Keys that do not exist are considered to be empty sets.