UBlueprintMapLibrary::Map_Keys
#include "Kismet/BlueprintMapLibrary.h"
Access: public
Specifiers: staticBlueprintCallableCustomThunk
Description
Outputs an array containing a copy of every key in the map. Order matches the map's internal iteration order, not insertion order.
Caveats & Gotchas
- • The output array is a snapshot — mutating the map afterwards does not update the Keys array you already retrieved.
- • TMap iteration order is not guaranteed to match insertion order and can shift after removals, since the underlying sparse array may reuse freed slots.
Signature
static void Map_Keys(const TMap<int32, int32>& TargetMap, TArray<int32>& Keys);Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| TargetMap | const TMap<int32, int32>& | Wildcard placeholder for the map to read keys from. | — |
| Keys | TArray<int32>& | Output array populated with a copy of every key currently in the map. | — |
Return Type
void Example
Collect all keys C++
TMap<FName, int32> Scores;
Scores.Add(TEXT("Player1"), 100);
Scores.Add(TEXT("Player2"), 75);
TArray<FName> AllKeys;
Scores.GetKeys(AllKeys); // native TMap::GetKeys — the direct equivalent of the Map_Keys nodeTags
Version History
Introduced in: unknown
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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