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        () => 的含义C# 中的运算符(如果存在)

        Meaning of () =gt; Operator in C#, if it exists(() = 的含义C# 中的运算符(如果存在))

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                • 本文介绍了() => 的含义C# 中的运算符(如果存在)的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  在 Jon Skeet 的回答中,我在这里读到了这条有趣的线路.

                  I read this interesting line here, in an answer by Jon Skeet.

                  有趣的是,他主张使用委托:

                  The interesting line is this, where he advocated using a delegate:

                  Log.Info("I did something: {0}", () => action.GenerateDescription());
                  

                  问题是,我想知道这个 ()=> 运算符是什么?我试过用谷歌搜索它,但因为它是由符号组成的,所以谷歌真的帮不上什么忙.我是不是很尴尬地错过了什么?

                  Question is, what is this ()=> operator, I wonder? I tried Googling it but since it's made of symbols Google couldn't be of much help, really. Did I embarrassingly miss something here?

                  推荐答案

                  这引入了一个不带参数的 lambda 函数(匿名委托),它相当于并且基本上是以下的简写:

                  This introduces a lambda function (anonymous delegate) with no parameters, it's equivalent to and basically short-hand for:

                  delegate void () { return action.GenerateDescription(); }
                  

                  你也可以添加参数,所以:

                  You can also add parameters, so:

                  (a, b) => a + b
                  

                  这大致相当于:

                  delegate int (int a, int b) { return a + b; }
                  

                  这篇关于() => 的含义C# 中的运算符(如果存在)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跟版网!

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