枚举成员命名空间冲突 [英] enum members namespace clash
问题描述
我有两个不同的枚举定义，同名成员。
编译器抱怨重复定义。这是预期的
行为吗？
我不能在不同的枚举定义中使用相同名称的字段吗？我认为
它应该完全有效。它是一个愚蠢的限制
必须定义不相交的枚举符号定义。这就像在结构中拥有不相交的成员名字一样
。
Bahadir
Hi,
I have two different enum definitions with members of same name. The
compiler complains about duplicate definitions. Is this expected
behaviour?
Can''t I have same-named fields in different enum definitions? I think
it should have been perfectly valid to do that. Its a stupid limitation
to have to define disjoint enum symbol definitions. This is like having
to have disjoint member names in structures.
Bahadir
推荐答案
2005年6月2日09:12:04 -0700， Bi ** ***********@gmail.com 写道：
On 2 Jun 2005 09:12:04 -0700, Bi*************@gmail.com wrote:
我有两个不同的枚举定义同名成员。
编译器抱怨重复的定义。这是预期的行为吗？
Hi,
I have two different enum definitions with members of same name. The
compiler complains about duplicate definitions. Is this expected
behaviour?
是的，枚举常量在一个相同的命名空间中（它们与函数共享
） ，变量和typedef名称）。
见FAQ中的1.29。
Yes, enumeration constants are in one and the same namespace (which
they share with functions, variables and typedef names).
See 1.29 from the FAQ.
Bi ************* @ gmail.com 写道：
<
我有两个不同的枚举定义，同名成员。
编译器抱怨重复的定义。这是预期的行为吗？
我不能在不同的枚举定义中使用同名的字段吗？我认为
它应该是完全有效的。
这是一个愚蠢的限制，必须定义不相交的枚举符号定义。
这就像是
在结构中有不相交的成员名称。
Hi,
I have two different enum definitions with members of same name. The
compiler complains about duplicate definitions. Is this expected
behaviour?
Can''t I have same-named fields in different enum definitions? I think
it should have been perfectly valid to do that.
Its a stupid limitation
to have to define disjoint enum symbol definitions.
This is like having
to have disjoint member names in structures.
不是真的。如果会员名字相同，你无法知道哪个enum
a会员所属。
enum forward {ZERO，ONE};
enum落后{ONE，ZERO};
返回ZERO;
或许，
如果你的枚举成员在同一个值上有相同的名字，
你只用一个枚举就可以做得更好吗？
-
pete
Not really. You have no way of knowing which enum
a member belongs to, if members have the same name.
enum forward {ZERO, ONE};
enum backward{ONE, ZERO};
return ZERO;
Perhaps,
if your enum members have the same name at the same value,
you could do better with only one enum?
--
pete
Bi **** *********@gmail.com 写道：
Bi*************@gmail.com writes:
我有两个不同的枚举定义，同名成员。
编译器抱怨重复的定义。这是预期的行为吗？
是的。
我不能在不同的枚举定义中使用相同名称的字段吗？
No.
我认为应该完全有效。它是一个愚蠢的限制，必须定义不相交的枚举符号
定义。这就像在结构中必须有不相交的成员名称。
I have two different enum definitions with members of same name. The
compiler complains about duplicate definitions. Is this expected
behaviour?
Yes.
Can''t I have same-named fields in different enum definitions?
No.
I think it should have been perfectly valid to do that. Its a
stupid limitation to have to define disjoint enum symbol
definitions. This is like having to have disjoint member names
in structures.
你总是可以切换到C ++。它具有可以做你想要的
的功能。除此之外，标准做法是为每个枚举类型使用
唯一前缀。
-
Ben Pfaff
电子邮件： bl*@cs.stanford.edu
web： http://benpfaff.org
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