bitop #
Performs a bitwise operation between multiple keys (containing string values) and stores the result in the destination key.
bitop(key, operation, keys, [options], [callback]) #
Arguments | Type | Description |
---|---|---|
key | string | Destination key identifier |
operation | string | Bitwise operation to perform. Allowed values: AND , OR , XOR , NOT |
keys | array | list of source keys on which the bitwise operation will be applied |
options | JSON Object | Optional parameters |
callback | function | Callback |
Options #
Option | Type | Description | Default |
---|---|---|---|
queuable | boolean | Make this request queuable or not | true |
Return Value #
Returns the MemoryStorage
object to allow chaining.
Callback Response #
Returns an integer containing the length of the new key's value.
Usage #
// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.bitop('key', 'AND', ['srckey1', 'srckey2', '...'], function (err, length) {
// callback called once the action has completed
});
// Using promises (NodeJS only)
kuzzle.memoryStorage.bitopPromise('key', 'AND', ['srckey1', 'srckey2', '...'])
.then(length => {
// resolved once the action has completed
});
Callback response:
42
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