method
shift
![Some documentation Importance_1](https://d2vfyqvduarcvs.cloudfront.net/images/importance_1.png?1349367920)
shift()
public
Removes a [key, value] pair from the database, and returns it. If the database is empty, returns nil.
The order in which values are removed/returned is not guaranteed.
shift()
public
Removes a [key, value] pair from the database, and returns it. If the database is empty, returns nil.
The order in which values are removed/returned is not guaranteed.