lambda表达式和方法组之间的差异 [英] Difference between lambda expression and method group

问题描述

什么

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

和

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

?

ReSharper的建议使用一个表达式。

Resharper suggests to use the first expression.

推荐答案

有是在问候的结果没有什么区别。然而，第二个创建一个额外的重定向：代码会先调用您的匿名方法的需要命名一个参数 X 而这又调用门面。 Customers.GetSingle 与参数。这种重定向没有任何好处可言，这就是为什么ReSharper的告诉你使用的第一个选择。

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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