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TValueOrError

Type used to return either some data, or an error

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MacOS

Linux

References

Module	Core
Header	/Engine/Source/Runtime/Core/Public/Math/UnitConversion.inl
Include	#include "Math/UnitConversion.inl"

Syntax

template<typename ValueType, typename ErrorType>
class TValueOrError

Remarks

Type used to return either some data, or an error

Constructors

	Name	Description
	TValueOrError ( TValueOrError_ValueProxy< A >&& Pr... )	Construct the result from a value, or an error (See MakeValue and MakeError)
	TValueOrError ( TValueOrError_ErrorProxy< A >&& Pr... )
	TValueOrError ( TValueOrError&& In )	Move construction/assignment

Functions

	Name	Description
ErrorType &	GetError()	Get the error, if set
const ErrorT...	GetError()
ValueType &	GetValue()	Access the value contained in this result
const ValueT...	GetValue()
bool	IsValid()	Check whether this value is valid
ErrorType	StealError()	Steal this result's error, if set, causing it to become unset
ValueType	StealValue()	Steal this result's value, causing it to become unset

Operators

		Name	Description
	TValueOrErro...	operator= ( TValueOrError&& In )

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