#define Hash(self,key) ((unsigned)((key)->node_nr))
#define KeysEqual(self,key1,key2) (key1) == (key2)
#define SetRangeEmpty(ptr,size) memset(ptr, 0, (size) * sizeof((ptr)[0]))
#define EntrySetEmpty(value) (value).node = NULL
#define Hash(self,key) ((unsigned)((key)->node_nr))
#define KeysEqual(self,key1,key2) (key1) == (key2)
#define SetRangeEmpty(ptr,size) memset(ptr, 0, (size) * sizeof((ptr)[0]))
#define EntrySetEmpty(value) (value).node = NULL