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A Map's node interface provides the following functionality for developers working in Blueprints: adding keys and their associated values (key-value pairs) to a Map, removing items from a Map, clearing Maps, looking up keys and values contained in a Map, and checking a Map's length. The following guide provides additional information about the various nodes that make-up Blueprint Sets in Unreal Engine 4 (UE4).
| Node | Description |
|---|---|
| Add | Adds a key-value pair to a Map. |
| Clear | Clears a Map of all entries. |
| Contains | This node checks to see if a key exists in a provided Map. |
| Find | Find the value associated with a provided key. |
| Keys | Outputs an Array of all keys present in the Map. |
| Length (Maps) | Determines the number of entries in a provided Map. |
| Remove | Removes a key-value pair from a Map. |
| Values | Outputs an array of all values present in the Map. |