UBlueprintSetLibrary::Set_Length

function Engine Blueprint Since unknown

#include "Kismet/BlueprintSetLibrary.h"

Access: public Specifiers: staticBlueprintPureCustomThunk

Description

Returns the number of items currently stored in the set.

Caveats & Gotchas

• Backs the Blueprint 'Length' node (searchable via the num/size/count keywords); in C++ call TSet::Num() directly instead of this wildcard wrapper.
• O(1) — reads the set's cached element count rather than counting entries on each call.

Signature

static int32 Set_Length(const TSet<int32>& TargetSet);

Parameters

Name	Type	Description	Default
TargetSet	const TSet<int32>&	Wildcard placeholder for the set to get the length of.	—

Return Type

int32

Example

Get element count C++

TSet<FName> UnlockedLevels = { TEXT("Level01"), TEXT("Level02") };
int32 Count = UnlockedLevels.Num(); // native TSet::Num — the direct equivalent of the Set_Length node

Version History

Introduced in: unknown

Version	Status	Notes
5.6	stable	—

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