如何解决编译器枚举重新声明冲突 [英] How solve compiler enum redeclaration conflict
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问题描述
请考虑以下C ++枚举:
Consider the following C++ enumerations:
enum Identity
{
UNKNOWN = 1,
CHECKED = 2,
UNCHECKED = 3
};
enum Status
{
UNKNOWN = 0,
PENDING = 1,
APPROVED = 2,
UNAPPROVED = 3
};
编译器将 UNKNOWN
项与抛出此错误:
The Compiler conflicted the both UNKNOWN
items and threw this error:
错误:重新声明了未知
error: redeclaration of 'UNKNOWN'
我能够解决将 UNKNOWN
之一更改为 UNKNOWN_a
的错误,但是我会
I am able to solve this error changing one of the UNKNOWN
to UNKNOWN_a
, but I would like to do not change the names.
如何在不更改枚举$ c的情况下解决冲突, $ c>项目名称?
How can I solve this conflict without changing the enum
items name?
推荐答案
您可以使用作用域枚举。这需要C ++ 11或更高版本的支持。
You can use scoped enumerations for this. This requires C++11 or higher support.
enum class Identity
{
UNKNOWN = 1,
CHECKED = 2,
UNCHECKED =3
};
enum class Status
{
UNKNOWN = 0,
PENDING = 1,
APPROVED = 2,
UNAPPROVED =3
};
int main ()
{
Identity::UNKNOWN;
Status::UNKNOW;
}
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