哪一个更好的,可以说,在一个方法参数类型(不涉及LINQ)。 显然,func是更好,因为它更简单,更具描述性的,如果每个人都用这个一切都将变得兼容(好)。 不过,我注意到微软使用自己的代表在一些图书馆,例如事件处理程序。因此,什么是其中一方的优点和缺点?当我应该使用它?
Which one is better in, say, parameter type in a method (not related to LINQ). Apparently Func is better since it's simpler, more descriptive, and if everyone is using this everything will become compatible (good). However I notice Microsoft uses its own delegate at some libraries, for example event handlers. So, what are the advantages and drawbacks of either of them? when should I use it?
编辑:
显然Func键<>仅在3.5可用,所以这可能是可能的,我看到非Func键代表的主要原因。其他任何理由不使用Func键? (例如:这是从.NET4)
同样的问题也适用于动作<>
The same question also applies for Action<>
推荐答案
Func键&LT;>是有用的,当它是很清楚他们是用来做什么,以及输入数量比较少。
Func<> is useful when it's very clear what they're used for, and the number of inputs is small.
在输入数量较大,或者有可能是一些模糊过的意图 - 然后使用名为参数的委托使事情更加清楚。
When the number of inputs is larger, or there could be some ambiguity over the intent - then using a delegate with named arguments makes things clearer.
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