How much memory is reserved when initializing NSObject?

Question

When I use this statement in objective c

NSObject object = [[NSObject alloc] init];

How much memory is reserved for object?

Answer 1

You can test the size of objects with the following code:

#import <malloc/malloc.h>
//...
NSObject *obj = [[NSObject alloc] init];
NSLog(@"Size: %zd bytes", malloc_size((__bridge const void *)(obj)));

This test produced: "Size: 16 bytes"