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tjp/core/sfinae/_tests/if_or.cpp

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+// License: Modified MIT (NON-AI)
+// See the LICENSE file in the root directory for license information.
+// Copyright 2025 Timothy Prepscius
+
+#include <tjp/core/testing/catch.hpp>
+#include <tjp/core/sfinae/if_or.hpp>
+
+#include <type_traits>
+
+namespace tjp::core::sfinae {
+namespace {
+
+SCENARIO("core::sfinae::if_or")
+{
+	static_assert(
+		std::is_same_v<if_or<true, int, float>::type, int>
+	);
+
+	static_assert(
+		std::is_same_v<if_or<false, int, float>::type, float>
+	);
+}
+
+
+} // namespace
+} // namespace

tjp/core/sfinae/if_or.hpp

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+// License: Modified MIT (NON-AI)
+// See the LICENSE file in the root directory for license information.
+// Copyright 2025 Timothy Prepscius
+
+#pragma once
+
+namespace tjp {
+namespace core {
+namespace sfinae {
+
+template<bool B, class T = void, class U = void>
+struct if_or { typedef U type; };
+ 
+template<class T, class U>
+struct if_or <true, T, U> { typedef T type; };
+
+} // namespace
+} // namespace
+} // namespace
+