.NET枚举允许逗号的最后一个字段 [英] .NET Enumeration allows comma in the last field

问题描述

为什么允许在最后一个字段逗号这个.NET枚举？
这是否有什么特殊的意义？

  [的FlagsAttribute]
公共枚举DependencyPropertyOptions：字节
{
           默认值= 1，
           只读= 2，
           可选= 4，
           DelegateProperty = 32，
           元数据= 8，
           非序列化= 16，
}
 

解决方案

这没有什么特别的意思，只是方式的编译器工作，这是主要是这个原因：

  [的FlagsAttribute]
公共枚举DependencyPropertyOptions：字节
{
           默认值= 1，
           只读= 2，
           可选= 4，
           DelegateProperty = 32，
           元数据= 8，
           非序列化= 16，
           // EnumPropertyIWantToCommentOutEasily = 32
}
 

通过评论的请求：本信息来直接从 C＃规范（页363 /第19.7节）

  

像标准C ++，C＃允许一个尾随逗号数组的初始化函数的末尾。此语法提供了灵活性，增加或删除这样一个列表的成员，并简化了机器产生这样的列表。

Why is this .NET enumeration allowed to have a comma in the last field?
Does this have any special meaning?

[FlagsAttribute]
public enum DependencyPropertyOptions : byte
{
           Default = 1,
           ReadOnly = 2,
           Optional = 4,
           DelegateProperty = 32,
           Metadata = 8,
           NonSerialized = 16,
}

解决方案

It has no special meaning, just the way the compiler works, it's mainly for this reason:

[FlagsAttribute]
public enum DependencyPropertyOptions : byte
{
           Default = 1,
           ReadOnly = 2,
           Optional = 4,
           DelegateProperty = 32,
           Metadata = 8,
           NonSerialized = 16,
           //EnumPropertyIWantToCommentOutEasily = 32
}

By comment request: This info comes straight out of the C# Specification (Page 363/Section 19.7)

Like Standard C++, C# allows a trailing comma at the end of an array-initializer. This syntax provides flexibility in adding or deleting members from such a list, and simplifies machine generation of such lists.

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