c# - "Object Expression"是否像 F# 一样存在于 C# 中？

Question

F#语言中有一个有趣的概念:

对象表达式 (F#)

http://msdn.microsoft.com/en-us/library/dd233237.aspx

定义:

An object expression is an expression that creates a new instance of a dynamically created, anonymous object type that is based on an existing base type, interface, or set of interfaces.

我想知道，C# 中是否存在类似的东西？ 或者这些东西只有 F# 编程语言可用？

Answer 1

不，那不存在。我认为最接近的是实现这些接口(interface)的类。

匿名类型无法符合接口(interface)或派生自任何东西。

Lambda 和委托(delegate)提供函数作为变量。

对象表达式的文档说明了这一点，这听起来像是一种语言便利。

You use object expressions when you want to avoid the extra code and overhead that is required to create a new, named type. If you use object expressions to minimize the number of types created in a program, you can reduce the number of lines of code and prevent the unnecessary proliferation of types. Instead of creating many types just to handle specific situations, you can use an object expression that customizes an existing type or provides an appropriate implementation of an interface for the specific case at hand.

你可以用这样的东西来伪造它(虽然你不能将它限制在一个接口(interface)上)

var foo = new { square = new Func<int, int>(x => x * x) };