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diff --git a/hw3/include/sceneIO_cache.h b/hw3/include/sceneIO_cache.h
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+/******************************************************************/
+/* This file is part of the homework assignments for CSCI-427/527 */
+/* at The College of William & Mary and authored by Pieter Peers. */
+/* No part of this file, whether altered or in original form, can */
+/* be distributed or used outside the context of CSCI-427/527     */
+/* without consent of either the College of William & Mary or     */
+/* Pieter Peers.                                                  */
+/******************************************************************/
+#ifndef _SCENEIO_CACHE_H_
+#define _SCENEIO_CACHE_H_
+
+#include <map>
+#include <memory>
+#include <string>
+#include <vector>
+
+template<typename T>
+class nodeCache {
+ public:
+  //////////////////
+  // Constructors //
+  //////////////////
+  nodeCache(void) {}
+  nodeCache(const nodeCache<T>&) = delete;
+
+  ///////////////
+  // Operators //
+  ///////////////
+  nodeCache& operator=(const nodeCache& ) = delete;
+
+  /////////////
+  // Methods //
+  /////////////
+  std::shared_ptr<T> get(const std::string& name) const;
+  bool add(const std::string& name, const std::shared_ptr<T>& node);
+
+  std::vector<std::shared_ptr<T>> unusedNodes(unsigned int maxCount=1) const;
+  std::vector<std::shared_ptr<T>> allNodes(void) const;
+
+ private:
+  //////////////////////////
+  // Private Data Members //
+  //////////////////////////
+  std::map<std::string, std::shared_ptr<T>> _cache;
+};
+
+////////////////////
+// Inline Methods //
+////////////////////
+#include "sceneIO_cache.inline.h"
+
+#endif /* _SCENEIO_CACHE_H_ */