SDK
SDK Javascript v5.x
1

# lpop

Removes and returns the first element of a list.

[Redis documentation]


# lpop(key, [options], [callback])

Arguments Type Description
key string Key identifier
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 the value of the removed item.

# Usage

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// Using callbacks (NodeJS or Web Browser)
kuzzle.memoryStorage.lpop('key', function (err, value) {
  // callback called once the action has completed
});
// Using promises (NodeJS only)
kuzzle.memoryStorage.lpopPromise('key')
  .then(value => {
    // resolved once the action has completed
  });

Callback response:

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"foo"