upload working source

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto
+*.psd filter=lfs diff=lfs merge=lfs -text
+*.ipch filter=lfs diff=lfs merge=lfs -text

AndOrNot.h

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+// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "inc.h"
+
+/**
+ * Does a boolean AND of the ::Value static members of each type, but short-circuits if any Type::Value == false.
+ */
+template <typename... Types>
+struct TAnd;
+
+template <bool LHSValue, typename... RHS>
+struct TAndValue
+{
+	enum { Value = TAnd<RHS...>::Value };
+};
+
+template <typename... RHS>
+struct TAndValue<false, RHS...>
+{
+	enum { Value = false };
+};
+
+template <typename LHS, typename... RHS>
+struct TAnd<LHS, RHS...> : TAndValue<LHS::Value, RHS...>
+{
+};
+
+template <>
+struct TAnd<>
+{
+	enum { Value = true };
+};
+
+/**
+ * Does a boolean OR of the ::Value static members of each type, but short-circuits if any Type::Value == true.
+ */
+template <typename... Types>
+struct TOr;
+
+template <bool LHSValue, typename... RHS>
+struct TOrValue
+{
+	enum { Value = TOr<RHS...>::Value };
+};
+
+template <typename... RHS>
+struct TOrValue<true, RHS...>
+{
+	enum { Value = true };
+};
+
+template <typename LHS, typename... RHS>
+struct TOr<LHS, RHS...> : TOrValue<LHS::Value, RHS...>
+{
+};
+
+template <>
+struct TOr<>
+{
+	enum { Value = false };
+};
+
+/**
+ * Does a boolean NOT of the ::Value static members of the type.
+ */
+template <typename Type>
+struct TNot
+{
+	enum { Value = !Type::Value };
+};