具有相同签名的两种方法的互斥约束 [英] Mutally exclusive constraints on two methods with the same signature

问题描述

所以这两种方法具有相同的签名，但约束不同

So these two methods have the same signature but different constraints

public static void Method<T>(ref T variable) where T : struct { }

public static void Method<T>(ref T variable) where T : class { }

但是它们不能在单个类中定义，因为它们具有相同的签名.但是在这种特殊情况下，它们是互斥的.(除非我对此有误)

But they cannot be defined in a single class because they have the same signatures. But in this particular case they're mutually exclusive. (Unless I'm wrong about that)

我知道您可以在 class 和 struct 之外添加其他约束，但不能同时指定 struct 和 class 的相同方法.那为什么编译失败呢?

I understand you can put additional constraints besides class and struct but you can't specify both struct and class on the same method. So why would this fail to compile?

推荐答案

@安东尼(链接).

就编译器而言，您有一个 duplicate 方法-相同数量和类型的参数.

As far as the compiler is concerned you have a duplicate method - same numbers and types of parameters.

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