Map

Map

Windows
MacOS
Linux

Actions

Add

Adds a key and value to the map. If something already uses the provided key it will be overwritten with the new value. After calling Key is guaranteed to be associated with Value until a subsequent mutation of the Map.

Target is Blueprint Map Library

Clear

Clears a map of all entries, resetting it to empty

Target is Blueprint Map Library

Contains

Checks whether key is in a provided Map

Target is Blueprint Map Library

Find

Finds the value associated with the provided Key

Target is Blueprint Map Library

Keys

Outputs an array of all keys present in the map

Target is Blueprint Map Library

Length

Determines the number of entries in a provided Map

Target is Blueprint Map Library

Make Map

Create a map from a series of key/value items.

Remove

Removes a key and its associated value from the map.

Target is Blueprint Map Library

Values

Outputs an array of all values present in the map

Target is Blueprint Map Library

Select Skin
Light
Dark

Welcome to the new Unreal Engine 4 Documentation site!

We're working on lots of new features including a feedback system so you can tell us how we are doing. It's not quite ready for use in the wild yet, so head over to the Documentation Feedback forum to tell us about this page or call out any issues you are encountering in the meantime.

We'll be sure to let you know when the new system is up and running.

Post Feedback