C# 4.0新特性学习资料汇总

今天了解了一下C# 4.0的一些新特性，并在VS2010里试了几把，主要的特性包括：

 1. Dynamic binding

 2. Named and Optional Arguments

 3. Features for COM interop

 4. Variance

 5. Relationship with Visual Basic

学习资料

1. New Features in C# 4.0

2. [[翻 译] C# 4.0新特性（白皮书）- Anders Liu

   ](http://www.cnblogs.com/AndersLiu/archive/2008/11/03/new-features-in-csharp-4-ctp.html)

3. C# 4.0’s New Features Explained By Josh Fischer

4. Generic Covariance and Contra-Variance in C# 4.0

5. c#4.0 新特性之(Dynamic Lookup1, 2 Named and Optional Parameters1,2) - 维生素C.net

示例代码

Visual Studio 2010 Samples for C# 4.0

关于C#4.0语言特性，主要关注以下几个工程：

 1. Named and Optional

 2. Office Sample

 3. Simple Variance

 4. Python Sample

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