From 4556c5f625ed143a2334acc26505b658b719b451 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Sun, 28 Jun 2009 20:48:47 +0000
Subject: Added the Bu::ListHash class, it's a really simple wrapper for
 Bu::Hash that puts all of the values in a Bu::List assosiated with the key. 
 When you insert, it will append to the list at that key, and create a list if
 it needs to.

When erasing, getting, etc, you operate on the whole list, not just one element.
---
 src/listhash.cpp |  0
 src/listhash.h   | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 src/listhash.cpp
 create mode 100644 src/listhash.h

diff --git a/src/listhash.cpp b/src/listhash.cpp
new file mode 100644
index 0000000..e69de29
diff --git a/src/listhash.h b/src/listhash.h
new file mode 100644
index 0000000..73aa3f8
--- /dev/null
+++ b/src/listhash.h
@@ -0,0 +1,47 @@
+#ifndef BU_LIST_HASH_H
+#define BU_LIST_HASH_H
+
+#include "bu/hash.h"
+#include "bu/list.h"
+
+namespace Bu
+{
+	template<typename key, typename value, typename sizecalc = __calcNextTSize_fast, typename keyalloc = std::allocator<key>, typename valuealloc = std::allocator<Bu::List<value> >, typename challoc = std::allocator<uint32_t> >
+	class ListHash : public Hash<key, Bu::List<value>, sizecalc, keyalloc, valuealloc, challoc>
+	{
+		typedef Hash<key, Bu::List<value>, sizecalc, keyalloc, valuealloc, challoc> ParentType;
+	public:
+		ListHash()
+		{
+		}
+
+		ListHash( const ListHash &src ) :
+			ParentType( src )
+		{
+		}
+
+		virtual ~ListHash()
+		{
+		}
+
+		ListHash &operator=( const ListHash &src )
+		{
+			*dynamic_cast<ParentType *>(this) =
+				dynamic_cast<ParentType &>(src);
+		}
+
+		virtual void insert( const key &k, const value &v )
+		{
+			if( !has( k ) )
+			{
+				ParentType::insert( k, List<value>() );
+			}
+			get( k ).append( v );
+		}
+		
+	private:
+	};
+
+};
+
+#endif
-- 
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