+ #ifndef HASHMAP_DEPRECATED
+ #include <ext/hash_map>
+ /** Oddball linux namespace for hash_map */
+ #define nspace __gnu_cxx
+ #define BEGIN_HASHMAP_NAMESPACE namespace nspace {
+ #define END_HASHMAP_NAMESPACE }
+ #else
+ /** Yay, we have tr1! */
+ #include <tr1/unordered_map>
+ /** Not so oddball linux namespace for hash_map with gcc 4.0 and above */
+ #define hash_map unordered_map
+ #define nspace std::tr1
+ #define BEGIN_HASHMAP_NAMESPACE namespace std { namespace tr1 {
+ #define END_HASHMAP_NAMESPACE } }
+ #endif