GETBIT key offset

Available since 2.2.0.

Time complexity: O(1)

Returns the bit value at offset in the string value stored at key.

When offset is beyond the string length, the string is assumed to be a contiguous space with 0 bits. When key does not exist it is assumed to be an empty string, so offset is always out of range and the value is also assumed to be a contiguous space with 0 bits.

*Return value

Integer reply: the bit value stored at offset.

*Examples

redis>  SETBIT mykey 7 1 
(integer) 0
redis>  GETBIT mykey 0 
(integer) 0
redis>  GETBIT mykey 7 
(integer) 1
redis>  GETBIT mykey 100 
(integer) 0
redis>