I continue dividing the length value by 256 and incrementing the bytecounter until the result of division yields a value less than 1.
我继续将长度值除以256并增加字节计数器,直到除得的值小于1。
3
Overhead in memory is very small: You basically have a 4- byte overhead per interface (the vtable pointers in the object's instance data) plus 4 bytes for the reference counter.