检查空参数的最佳方法(警卫条款) [英] Best way to check for null parameters (Guard Clauses)

问题描述

例如，您通常不希望构造函数中的参数为null，因此看到类似的东西是很正常的

For example, you usually don't want parameters in a constructor to be null, so it's very normal to see some thing like

if (someArg == null)
{
    throw new ArgumentNullException(nameof(someArg));
}

if (otherArg == null)
{
    throw new ArgumentNullException(nameof(otherArg));
}

它确实使代码有些混乱.

有什么方法可以比这更好地检查参数列表中的一个参数吗?

Is there any way to check an argument of a list of arguments better than this?

类似于检查所有参数，如果它们中的任何一个为空，并为您提供空的参数，则抛出ArgumentNullException.

Something like "check all of the arguments and throw an ArgumentNullException if any of them is null and that provides you with the arguments that were null.

顺便说一句，关于重复的问题声明，这不是关于用属性或内置标记来标记参数，而是所谓的保护子句"，以确保对象接收初始化的依赖关系.

By the way, regarding duplicate question claims, this is not about marking arguments with attributes or something that is built-in, but what some call it Guard Clauses to guarantee that an object receives initialized dependencies.

推荐答案

使用较新版本的C#语言，您可以编写此代码而无需其他库或其他方法调用:

With newer version of C# language you can write this without additional library or additional method call:

_ = someArg ?? throw new ArgumentNullException(nameof(someArg));
_ = otherArg ?? throw new ArgumentNullException(nameof(otherArg));

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