bitcount #
Counts the number of set bits (population counting) in a string.
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 #
// 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:
21
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