R.CONTAINS / R64.CONTAINS

Tests the set relationship between two bitmaps.

Syntax	R.CONTAINS key1 key2 [mode]
64-bit	R64.CONTAINS key1 key2 [mode]
Time complexity	O(N)

Arguments

• key1, key2 — both keys must exist
• mode — optional: ALL (key2 ⊆ key1), ALL_STRICT (proper subset), EQ (equal). Without a mode: any overlap.

Reply

Integer 0 or 1.

Notes

• The default overlap check has no token — an explicit NONE argument is rejected.
• Modes are case-sensitive (all is rejected), and the error names the argument as given: ERR invalid mode argument: all.

Example

127.0.0.1:6379> R.CONTAINS segment:a segment:b
(integer) 1
127.0.0.1:6379> R.CONTAINS segment:a segment:b ALL
(integer) 0