ZINTERCARD

Counts members in a sorted-set intersection.

Sorted sets · Example verified

Syntax covered here

ZINTERCARD numkeys key

The case supplies one input, making the result equal to that set's cardinality.

Tested example & replies

Requests below run in order against an empty database. Each connection authenticates with the fixture password first. Quoted values are strings; null is a nil reply; arrays preserve RESP order.

# connection: default
> ZADD scores 1 a 2 b
2
# connection: default
> ZINTERCARD 1 scores
2