UKismetMathLibrary::MaxOfByteArray

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticBlueprintPureUFUNCTION

Description

Finds the maximum byte (uint8) in an array and its index. Returns MaxValue=0 and IndexOfMaxValue=-1 on an empty array.

Caveats & Gotchas

• In Blueprint, byte arrays map to Enum arrays — this function is most commonly used with byte-enum values where you want the numerically highest enum member.
• An empty array returns MaxValue of 0 and index -1; since 0 is a valid byte value, always verify IndexOfMaxValue before using MaxValue.

Signature

static ENGINE_API void MaxOfByteArray(const TArray<uint8>& ByteArray, int32& IndexOfMaxValue, uint8& MaxValue);

Parameters

Name	Type	Description	Default
ByteArray	const TArray<uint8>&	The array to search.	—
IndexOfMaxValue	int32&	Output: index of the maximum value. -1 if array is empty.	—
MaxValue	uint8&	Output: the maximum byte value found. 0 if array is empty.	—

Return Type

void

Example

Find the highest priority byte flag C++

TArray<uint8> Priorities = { 2, 5, 1, 5, 3 };
int32 Index;
uint8 Max;
UKismetMathLibrary::MaxOfByteArray(Priorities, Index, Max);
// Max == 5, Index == 1

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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