UBlueprintSetLibrary::Set_Union

function Engine Blueprint Since unknown

#include "Kismet/BlueprintSetLibrary.h"

Access: public Specifiers: staticBlueprintCallableCustomThunk

Description

Assigns Result to the union of Set A and Set B — every element in A plus every element in B, with duplicates collapsed since a set only stores unique values.

Caveats & Gotchas

• Elements present in both A and B are naturally deduplicated in Result, since TSet never stores two equal elements.
• Result is written in place — use a separate set variable for it rather than reusing A or B as the output.

Signature

static void Set_Union(const TSet<int32>& A, const TSet<int32>& B, TSet<int32>& Result);

Parameters

Name	Type	Description	Default
A	const TSet<int32>&	Wildcard placeholder for one set to union.	—
B	const TSet<int32>&	Wildcard placeholder for the other set to union.	—
Result	TSet<int32>&	Wildcard output set that receives every element from A and B combined.	—

Return Type

void

Example

Union two sets C++

TSet<int32> A = {1, 2, 3};
TSet<int32> B = {2, 3, 4};
TSet<int32> Result = A.Union(B); // {1, 2, 3, 4}

Version History

Introduced in: unknown

Version	Status	Notes
5.6	stable	—

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