问题描述
``表示对象ID的不透明指针。
struct _objID;
typedef struct _objID * objectID;''''
你好。我使用定义了objectID类型的api。上面的
表示文档上的
范围。
以上意味着objectID被定义为指向尚未定义
class / struct _objID，并且，如果我理解正确的术语，则
是不透明的，只要_objID类/结构的实际性质是还不知道，
是啊？
我的问题是我需要静态地确定objectID的大小。我现在需要
占用与1,2,3 ...字符相同的空间，但不使用sizeof（objectID）
。可能吗？我当时认为它可能会像char *一样大小或类似的东西。
TIA
``Opaque-pointer representing the ID of an object.
struct _objID;
typedef struct _objID * objectID;''''
Hi again. Im using an api that defines an objectID type. The above
represents the
extent of the documentation on it.
The above means that objectID is defined as a pointer to an as yet undefined
class/struct _objID, and, if I understand the term correctly, is opaque in
so far as the actual nature of the _objID class/struct is as yet unknown,
yeah?
My problem is that I need to statically determine the size of an objectID. I
need to now that it occupies the same amount of space as 1,2,3... chars, but
without using sizeof(objectID). Is it possible? I was thinking that it might
be the same size as char* or something convenient like that.
TIA
推荐答案
指向任何对象的指针的大小是相同的并且与
a指向void相同。因此，您可以将sizeof（void *）用于您的目的。
Victor
The size of a pointer to any object is the same and is the same as
a pointer to void. So, you may use sizeof(void*) for your purposes.
Victor
什么阻止你使用sizeof（objectID）？
What is stopping you from using sizeof(objectID) ?
指向任何对象的指针的大小是相同的，并且与指向void的指针相同。
The size of a pointer to any object is the same and is the same as
a pointer to void.
更改诊所，Bazarov。
问候，
亚历山大。
Change the clinic, Bazarov.
regards,
alexander.
这篇关于指向不透明对象的指针大小的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！