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?
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; }
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