取消引用指针-vs-&-operator

Question

这两个任务是否相同,即完全相同的东西？

*pointer = object

pointer = &object

,其中pointer是指向"对象实例"的指针.

或者这只对原始类型有意义.

Answer 1

不,这些都不一样.

pointer = &object设置pointer使它指向object.

*pointer = object将指向的东西的值设置pointer为等于的值object.

Answer 2

绝对不.

*pointer = object

更改指针指向的内存.

pointer = &object

改变指针.

pointer   ---->    object1
&object   ---->    object

在第一种情况下,这变为:

pointer   ---->    object
&object   ---->    object   

在第二种情况:

                  ---->    object1 //could turn into a memory leak
&object, pointer  ---->    object