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-rw-r--r--src/misc/is_optional.hpp9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/misc/is_optional.hpp b/src/misc/is_optional.hpp
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+++ b/src/misc/is_optional.hpp
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+#pragma once
+#include <optional>
+#include <type_traits>
+
+template<typename T>
+struct is_optional : std::false_type {};
+
+template<typename T>
+struct is_optional<std::optional<T>> : std::true_type {};