bitcount

Counts the number of set bits (population counting) in a string.

[Redis documentation]


bitcount(key, [options], callback)

Arguments Type Description
key string Key identifier
options JSON Object Optional parameters
callback function Callback

Options

Option Type Description Default
end int Ending offset -1
queuable boolean Make this request queuable or not true
start int Starting offset 0

Callback Response

Return an integer containing the count of set bits.

Usage

Copied to clipboard!
// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.bitcount('key', function (err, count) {
  // callback called once the action has completed
});

// Using promises (NodeJS only)
kuzzle.memoryStorage.bitcountPromise('key')
  .then(count => {
    // resolved once the action has completed
  });

Callback response:

Copied to clipboard!
21