From 692e64613c45d6cfb9444931084b4a04965e826e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Sat, 6 Jun 2020 22:25:22 +0200
Subject: UUID: specialization of std::hash

---
 include/erebos/uuid.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'include/erebos/uuid.h')

diff --git a/include/erebos/uuid.h b/include/erebos/uuid.h
index e67677a..d3a3510 100644
--- a/include/erebos/uuid.h
+++ b/include/erebos/uuid.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <array>
+#include <cstring>
 #include <optional>
 #include <string>
 
@@ -24,3 +25,16 @@ struct UUID
 };
 
 }
+
+namespace std
+{
+	template<> struct hash<erebos::UUID>
+	{
+		std::size_t operator()(const erebos::UUID & uuid) const noexcept
+		{
+			std::size_t res;
+			std::memcpy(&res, uuid.uuid.data(), sizeof res);
+			return res;
+		}
+	};
+}
-- 
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