替代嵌套类型型防爆pression＆LT的; Func键＆LT; T＆GT;＆GT; [英] Alternative to nested type of type Expression<Func<T>>

问题描述

我有调用服务时使用的功能。之前，它调用服务，它会创建一个日志条目：

I have a function used when calling a service. Before it call the service, it will create a log entry:

protected TResult CallService<TService, TResult>(TService service,
    Expression<Func<TService, TResult>> functionSelector)
{
    Logger.LogServiceCall(service, functionSelector);
    return functionSelector.Compile()(service);
}

在Visual Studio 2010 code分析仪告诉我，我不应该在下面留言使用嵌套类型：

The Visual Studio 2010 Code Analyzer informs me that I shouldn't use Nested Type in the following message:

CA1006：Microsoft.Design：考虑
  设计中
  ServiceManager.CallService＆LT; TService，
  结果＆GT;（TService，
  防爆pression＆LT;＆Func键LT; TService，TResult＆GT;＆GT;）
  不窝泛型类型
  前pression＆LT;＆Func键LT; TService，TResult＆GT;＆GT;

CA1006 : Microsoft.Design : Consider a design where 'ServiceManager.CallService<TService, Result>(TService, Expression<Func<TService, TResult>>)' doesn't nest generic type 'Expression<Func<TService, TResult>>'.

虽然我可以简单地创建此条目标SUP pression规则，是有存在，将prevent显示这样的警告的方法吗？

While I could simply create a suppression rule for this entry, is there is an alternative that exist that would prevent displaying such warning?

推荐答案

我想喝preSS它在这种情况下，其原因是，来电者不必应付嵌套泛型，他只是一个路过拉姆达前pression，它很容易使用。

I would suppress it in this case, with the reason that the caller doesn't have to cope with nested generics, he is just passing a lambda expression, which is easy to use.

CA不会使拉姆达前pressions例外。有时，这是更好地共进晚餐preSS它，然后写怪异code。

CA does not make exceptions for lambda expressions. Sometimes It is better to suppress it then to write weird code.

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