1 files changed, 13 insertions, 0 deletions
diff --git a/include/handle.hpp b/include/handle.hpp
new file mode 100644
index 0000000..484b217
--- /dev/null
+++ b/include/handle.hpp
@@ -0,0 +1,13 @@
+#pragma once
+
+#include <cstdint>
+
+template<typename U>
+struct handle {
+    uint32_t id = invalid_id;
+    uint32_t generation = 0U;
+
+    [[nodiscard]] inline bool is_valid() const { return id != handle::invalid_id; }
+
+    static constexpr uint32_t invalid_id = UINT32_MAX;
+};