From 55ed2b3b4fac69d7d4bcb62f312b1fd233626577 Mon Sep 17 00:00:00 2001
From: Manuel Nickschas <sputnick@quassel-irc.org>
Date: Mon, 15 Oct 2018 21:22:04 +0200
Subject: [PATCH 1/1] types: Add STL-compliant Hash functor for Qt types

In order to use Qt types with std::unordered_set (and map), a
compatible hash function needs to be provided. Provide a generic
Hash<T> functor that just uses the qHash() function for the given
type.

This can be used as follows:
    std::unordered_set<QString, Hash<QString>> set;
---
 src/common/types.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/common/types.h b/src/common/types.h
index a806c58f..0816223d 100644
--- a/src/common/types.h
+++ b/src/common/types.h
@@ -225,6 +225,16 @@ QDataStream& operator>>(QDataStream& in, T& value)
     return in;
 }
 
+// STL-compliant hash functor for Qt types
+template<typename T>
+struct Hash
+{
+    uint operator()(const T& t) const
+    {
+        return qHash(t);
+    }
+};
+
 // Exceptions
 
 /**
-- 
2.20.1