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public/tier1/utlpair.h

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+//========= Copyright, Valve Corporation, All rights reserved. ================//
+//
+// std::pair style container; exists to work easily in our CUtlMap/CUtlHashMap classes
+//
+//=============================================================================//
+
+#ifndef UTLPAIR_H
+#define UTLPAIR_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+// std::pair style container; exists to work easily in our CUtlMap/CUtlHashMap classes
+template<typename T1, typename T2>
+class CUtlPair
+{
+public:
+	CUtlPair() {}
+	CUtlPair( T1 t1, T2 t2 ) : first( t1 ), second( t2 ) {}
+
+	bool operator<( const CUtlPair<T1,T2> &rhs ) const {
+		if ( first != rhs.first )
+			return first < rhs.first;
+		return second < rhs.second;
+	}
+
+	bool operator==( const CUtlPair<T1,T2> &rhs ) const {
+		return first == rhs.first && second == rhs.second;
+	}
+
+	T1 first;
+	T2 second;
+};
+
+// utility to make a CUtlPair without having to specify template parameters
+template<typename T1, typename T2>
+inline CUtlPair<T1,T2> MakeUtlPair( T1 t1, T2 t2 ) 
+{ 
+	return CUtlPair<T1,T2>(t1, t2); 
+}
+
+//// HashItem() overload that works automatically with our hash containers
+//template<typename T1, typename T2>
+//inline uint32 HashItem( const CUtlPair<T1,T2> &item )
+//{
+//	return HashItem( (uint64)HashItem( item.first ) + ((uint64)HashItem( item.second ) << 32) );
+//}
+
+
+#endif // UTLPAIR_H