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redisbitcount

Using bitcount command in redis

I set a key to 0 and get the bitcount using the below command in redis

 set result 0
 bitcount result

I get the output to be 2 instead of 0. When i set the result to any other number and print the bitcount I get the correct number of set bits with the addition of 2. Why is 2 by default added to the bitcount's result?

Solution

  • Because result holds the character "0" which is the integer 48 in decimal, which is 110000 in binary.