#endif
#define KeysEqual(this,key1,key2) (key1) == (key2)
#define SetRangeEmpty(ptr,size) memset(ptr, 0, (size) * sizeof((ptr)[0]))
#endif
#define KeysEqual(this,key1,key2) (key1) == (key2)
#define SetRangeEmpty(ptr,size) memset(ptr, 0, (size) * sizeof((ptr)[0]))