如何将枚举数量作为常数? [英] How can I get the number of enums as a constant?
问题描述
从枚举中定义的项目总数我看到我可以通过使用以下方式获取枚举数:
From Total number of items defined in an enum, I see I can get the number of enums by using:
Enum.GetNames(typeof(Item.Type)).Length;
非常棒!
但是,需要这个数字作为一个常数,所以我可以在Unity的 [Range(int,int)]
中使用它。
But, I need this number as a constant number, so that I can use it in Unity's [Range(int, int)]
feature.
private const int constEnumCount = Enum.GetNames(typeof(Item.Type)).Length;
以上不起作用,因为枚举数不是一个常数,所以我不能分配
The above does not work, because the enum count is not a constant number, so I cannot assign it to a constant variable.
如何将枚举数作为常量?
How can I get the number of enums as a constant?
推荐答案
不可能将枚举数作为 const
获取。 Enum.GetNames 使用反射来获取这些东西,这本质上是一个运行时操作。因此,在编译时无法知道,这是 const
的要求。
It's not possible to get the number of enums as a const
. Enum.GetNames
uses reflection to get these things, and that's inherently a runtime operation. Therefore, it can't be known at compile time, which is a requirement for being const
.
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