EnableIf.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
 
template <bool Predicate, typename Result = void>
class TEnableIf;
 
template <typename Result>
class TEnableIf<true, Result>
{
public:
    using type = Result;
    using Type = Result;
};
 
template <typename Result>
class TEnableIf<false, Result>
{ };
 
 
template <bool Predicate, typename Func>
class TLazyEnableIf;
 
template <typename Func>
class TLazyEnableIf<true, Func>
{
public:
    using type = typename Func::Type;
    using Type = typename Func::Type;
};
 
template <typename Func>
class TLazyEnableIf<false, Func>
{
};