Unreal Engine 4.26 Documentation

Unreal Engine 4.27 Documentation

Unreal Engine 5.0 Documentation

Unreal Engine 5.1 Documentation

Unreal Engine 5.2 Documentation

Unreal Engine 5.3 Documentation

Light Theme

Dark Theme

DeclVal

Equivalent to std::declval.

Windows

MacOS

Linux

References

Module	Core
Header	/Engine/Source/Runtime/Core/Public/Templates/UnrealTemplate.h
Include	#include "Templates/UnrealTemplate.h"

Syntax

template<typename T>
T && DeclVal()

Remarks

Equivalent to std::declval.

Note that this function is unimplemented, and is only intended to be used in unevaluated contexts, like sizeof and trait expressions.

Help shape the future of Unreal Engine documentation! Tell us how we're doing so we can serve you better.

Take our survey

Dismiss