HAS

HAS returns the value stored by the given key.


Argument	Type	Default value	Description
`key`	`String`		The key name string.

Returns Boolean True if the key exists else false.

KEEP_KEYS

KEEP_KEYS returns a new object with only given keys.

Returns Object New object with only given keys.

KEYS returns string array of object’s keys


Argument	Type	Default value	Description
`obj`	`Object`		The object whose keys you want to extract
`sort`	`Boolean`	`False`	If sort is true, then the returned keys will be sorted.

Returns String[] Array that contains object keys.

MERGE merge the given objects into a single object.


Argument	Type	Default value	Description
`objects`	`Object, repeated`		Objects to merge.

Returns Object Object created by merging.

MERGE_RECURSIVE recursively merge the given objects into a single object.


Argument	Type	Default value	Description
`objects`	`Objects, repeated`		Objects to merge.

Returns Object Object created by merging.

VALUES return the attribute values of the object as an array.


Argument	Type	Default value	Description
`object`	`Object`		Target object.

Returns Any[] Values of document returned in any order.

ZIP returns an object assembled from the separate parameters keys and values. Keys and values must be arrays and have the same length.


Argument	Type	Default value	Description
`keys`	`String[]`		An array of strings, to be used as key names in the result.
`values`	`Object[]`		An array of core.value, to be used as key values.

Returns Object An object with the keys and values assembled.