How create a size_t and how count the size?

Question

I create a NSData and use the function

- (const void *)bytes;

So, it return the bytes in a const void * variable. If I read the memory manually I will find this:

98 F3 00 76 84    //Then a lot of zero

Use strlen not work because the 00. But it will be aways the same size: 10 hexa lenght. So, to create a manually size_t, I will use:

size_t mysize = 0x0A

Or I have use the size in bits:

size_t mysize = 0x28

Is any of this correct?

Answer 1

The NSData contains the length.

const void *mybytes = [data bytes];
size_t mysize = [data length];

Answer 2

NSData also has -(NSUInteger)length.