From 953003a570f06c5f353df48ebd42467d622b9a67 Mon Sep 17 00:00:00 2001
From: David Fields <dfields@microsoft.com>
Date: Wed, 8 Jan 2020 12:24:56 -0800
Subject: [PATCH] Specialize std::hash for winrt::guid

#465
---
 strings/base_std_hash.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/strings/base_std_hash.h b/strings/base_std_hash.h
index 91d43272b..2324c85f2 100644
--- a/strings/base_std_hash.h
+++ b/strings/base_std_hash.h
@@ -47,4 +47,12 @@ namespace std
     template<> struct hash<winrt::Windows::Foundation::IUnknown> : winrt::impl::hash_base {};
     template<> struct hash<winrt::Windows::Foundation::IInspectable> : winrt::impl::hash_base {};
     template<> struct hash<winrt::Windows::Foundation::IActivationFactory> : winrt::impl::hash_base {};
+    
+    template<> struct hash<winrt::guid>
+    {
+        size_t operator()(winrt::guid const& value) const noexcept
+        {
+            return winrt::impl::hash_data(&value, sizeof(value));
+        }
+    }
 }