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> Unreal Engine API Reference > Runtime > MeshDescription > TTupleIndex

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TTupleIndex

Helper template which gets the tuple index of a given type from a given [TTuple](API\Runtime\Core\Templates\TTuple).

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References

Module	MeshDescription
Header	/Engine/Source/Runtime/MeshDescription/Public/MeshAttributeArray.h
Include	#include "MeshAttributeArray.h"

Syntax

template<typename Type, typename Tuple>
struct TTupleIndex

Remarks

Helper template which gets the tuple index of a given type from a given TTuple. If the type occurs more than once, the first index is returned. If the type doesn't appear, a compile error is generated.

Given Type = char, and Tuple = TTuple<int, float, char>, TTupleIndex<Type, Tuple>::Value will be 2.

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