平台无关的类型 [英] Platform independent types
问题描述
最近关于PIMPL和不透明指针的讨论让我想到了
我常见的关于在平台基础上定义
平台类型的构造。与结构类似，显然类型需要在头文件中完整以便于使用。
我的意思是类似以下内容。 ..
#ifdef PLATFORM1
typedef unsigned long unsigned64;
....
#elseif PLATFORM2
typedef unsigned long long unsigned64;
#endif
这样你可以确保给定类型的大小相同，
独立于平台。
所有的反对＃if等等，有没有人有任何其他的
方法为了达到同样的效果？
谢谢
The recent discussion on PIMPL and opaque pointers made me think about
a construct I have seen commonly with respect to defining types on a
platform by platform basis. Unlike structs, obviously types needs to
be ''complete'' in header files for ease of use.
What I mean is something like the following...
#ifdef PLATFORM1
typedef unsigned long unsigned64;
....
#elseif PLATFORM2
typedef unsigned long long unsigned64;
#endif
That way you can ensure that a given type is the same size,
independent of platform.
With all the vitriol against "#if", etc, does anyone have any other
methods for achieving the same sort of effect?
Thanks
推荐答案
joseph cook写道：
joseph cook wrote:
最近关于PIMPL和不透明指针的讨论使我想到了
a构造我常见的关于定义
$ b的类型$ b平台平台基础。与结构类似，显然类型需要在头文件中完整以便于使用。
我的意思是类似以下内容。 ..
#ifdef PLATFORM1
typedef unsigned long unsigned64;
...
#elseif PLATFORM2
typedef unsigned long long unsigned64;
#endif
这样你可以确保给定类型的大小相同，
独立于平台。
所有的反对＃if等等，任何人都有任何其他的
方法达到同样的效果？
The recent discussion on PIMPL and opaque pointers made me think about
a construct I have seen commonly with respect to defining types on a
platform by platform basis. Unlike structs, obviously types needs to
be ''complete'' in header files for ease of use.
What I mean is something like the following...
#ifdef PLATFORM1
typedef unsigned long unsigned64;
...
#elseif PLATFORM2
typedef unsigned long long unsigned64;
#endif
That way you can ensure that a given type is the same size,
independent of platform.
With all the vitriol against "#if", etc, does anyone have any other
methods for achieving the same sort of effect?
见标题< inttypes.h>
V
-
请在通过电子邮件回复时删除资金''A'
我没有回复最热门的回复，请不要问
See header <inttypes.h>
V
--
Please remove capital ''A''s when replying by e-mail
I do not respond to top-posted replies, please don''t ask
见标题< inttypes.h>
See header <inttypes.h>
但是那是's C99标题，不是C ++标题，对吧？
But that''s a C99 header, not a C++ Header, right?
joseph cook写道：
joseph cook wrote:
>请参阅标题< inttypes.h>
>See header <inttypes.h>
但这是一个C99标题，而不是C ++标题，对吗？
But that''s a C99 header, not a C++ Header, right?
大多数编译器已经提供它。它是C ++ 0x规范的一部分。
V
-
请删除大写''A在回复电子邮件的时候
我没有回复最热门的回复，请不要问
Most compilers already provide it. And it''s part of C++0x specification.
V
--
Please remove capital ''A''s when replying by e-mail
I do not respond to top-posted replies, please don''t ask
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