如果在C＃中的语句简化 [英] If statement simplification in C#

问题描述

我有一行代码如下所示：

I have a line of code that looks like this:

if (obj is byte || obj is int || obj is long || obj is decimal || obj is double || obj is float)

这是可能写的东西比这更优雅？是这样的：

Is it possible to write something more elegant than this? Something like:

if (obj is byte, int, long)

我知道，我的例子是不可能的，但有没有办法让这个看起来干净？

I know that my example isn't possible, but is there a way to make this look "cleaner"?

推荐答案

您可以写对象的扩展方法给你的语法如下：

You could write an extension method on object to give you syntax like:

if (obj.Is<byte, int, long>()) { ... }

这样的事情（使用多个版本更少或更多的通用参数：

Something like this (use multiple versions for fewer or more generic arguments:

public static bool Is<T1, T2, T3>(this object o)
{
    return o is T1 || o is T2 || o is T3;
}

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