为什么要升级到c＃4.0？ [英] Why should I upgrade to c# 4.0?
问题描述
我知道在C＃4.0有一些不错的新功能，但我不能，在我的生活，想到一个引人注目的原因，升级现有的项目或切换到新的项目。
I know there are some nice new features in C# 4.0 but I can't, for the life of me, think of a compelling reason for either upgrading existing projects or for switching to new projects.
我看过一些帖子，有人说如果他们的主机服务没有提供.Net 4，他们会找到另一个提供商.Net 4是他们的方向微小<？> 。
I've seen some posts where people have said that if their hosting service didn't provide .Net 4 that they'd find another provider as .Net 4 was pinicle to their direction <?>.
现在我的老板想让我同意将我们所有的生产环境切换到C＃现在做。
Now my boss is trying to get me to agree to switch all our production environments to C# 4 and to do it now.
所以问题是有人开始使用或转换一个项目，C＃4有一个令人信服的理由？
So the question is has anyone either began using, or converted a project to, C# 4 for a compelling reason? Was there a feature that you just had to have that would make your life so much easier?
推荐答案
有一些很酷的 C＃4.0中的新功能：
- 动态成员查询
- 协变和逆向通用类型参数
- 使用COM时可选参考关键字
- 可选参数和命名参数
- 已编入索引的属性
- Dynamic member lookup
- Covariant and contravariant generic type parameters
- Optional ref Keyword when using COM
- Optional parameters and named arguments
- Indexed properties
后Scott Guthrie详细介绍了 .NET 4的功能一般。另一个重要资源是 http://www.asp.net/learn/whitepapers/aspnet4上的白皮书。但是，我怀疑你会立即需要这些新功能。 Scott Hanselman博客：
In his release blog post Scott Guthrie goes into detail about the features of .NET 4 in general. Another great resource is a white paper at http://www.asp.net/learn/whitepapers/aspnet4. However, I'd doubt you are going to need one / any of these new features right away. As Scott Hanselman blogged:
有很多新的东西和
添加在.NET 4，但不是在
overwhelming-I-need-to-relearn-everything
方式。
there's a lot of stuff that's new and added in .NET 4, but not in that "overwhelming-I-need-to-relearn-everything" way.
因此，您是否应该升级取决于各种其他因素。有些原因让人想起：
Whether or not you should upgrade is therefore dependent on a variety of other factors. Some reasons that spring to mind:
- 在vs2008的单一平台VS2010上标准化您的开发环境。
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与你的经理进行公开对话似乎是适当的，以了解他的升级的推理。我认为，因为它的光泽不是一个引人注目的原因。
An open dialogue with your manager seems appropriate to understand his reasoning for the upgrade. I'd argue that because it's shiny isn't a compelling reason.
作为参考这个日期的Stack Overflow问题为什么不升级到最新的.net框架提供了与你的问题相反。
As a reference this dated Stack Overflow question "Why not upgrade to the latest .net framework" provides the inverse to your question.
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