表情健全的成员与Lambda表情 [英] Expression-bodied members vs Lambda expressions

问题描述

lambda表达式是被视为对象的代码块(表达式或语句块).它可以作为参数传递给方法，也可以由方法调用返回.

A lambda expression is a block of code (an expression or a statement block) that is treated as an object. It can be passed as an argument to methods, and it can also be returned by method calls.

(input parameters) => expression
 SomeFunction(x => x * x);

看着这句话，我想知道使用lambda和使用Expression-bodied有什么区别?

Looking this statement I was wondering what's the difference when using lambdas and when using Expression-bodied?

public string Name => First + " " + Last;

推荐答案

表达强健的方法是语法糖.而不是这样写:

Expression bodied methods are syntactic sugar. Instead of writing this:

public string GetName()
{
    return First + " " + Last;
}

您可以这样写:

public string GetName() => First + " " + Last;

和调用第一个或第二个的结果完全相同.

and the result of calling either the first or the second would be exactly the same.

对于所有表达式主体成员.

另一方面，lambda表达式已正式表示为

On the other hand, a lambda expressions as it is stated formally here is:

一个匿名功能，可用于 创建代理或表达式树类型.

an anonymous function that you can use to create delegates or expression tree types.

话虽如此，很明显，尽管语法相似，但有两件事完全不同.

That being said it is clear that despite the similarity in syntax, there are two completely different things.

这篇关于表情健全的成员与Lambda表情的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！