A collection that holds pairs of objects (keys and values) and supports efficiently retrieving the value corresponding to each key as read-only.
Map keys are unique; the map holds only one value for each key.
MutableMap
A modifiable collection that hold pairs of objects (keys and values) and supports efficiently retrieving the value corresponding to each key.
Map
A collection that holds pairs of objects (keys and values) and supports efficiently retrieving the value corresponding to each key as read-only. Map keys are unique; the map holds only one value for each key.
MutableMap
A modifiable collection that hold pairs of objects (keys and values) and supports efficiently retrieving the value corresponding to each key.