lambda 表达式和方法组的区别 [英] Difference between lambda expression and method group

问题描述

和

Class1.Method1<Guid, BECustomer>("cId", Facade.Customers.GetSingle);

和

Class1.Method1<Guid, BECustomer>("cId", x => Facade.Customers.GetSingle(x));

?

Resharper 建议使用第一个表达式.

Resharper suggests to use the first expression.

推荐答案

结果没有区别.但是，第二个创建了一个额外的重定向:代码将首先调用您的匿名方法，并接受一个名为 x 的参数，然后使用该参数调用 Facade.Customers.GetSingle范围.这种重定向根本没有任何好处，这就是 ReSharper 告诉您使用第一种替代方法的原因.

There is no difference in regards to the result. However, the second one creates an additional redirection: The code will first call your anonymous method the takes one parameter named x and that in turn calls Facade.Customers.GetSingle with that parameter. This redirection has no benefit at all, that's why ReSharper tells you to use the first alternative.

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