正在实施使用自动属性是个好主意单身？ [英] Is implementing a singleton using an auto-property a good idea?

问题描述

我最近发现了自动属性和他们一样不少。在这一刻，我想我在这里到处都可以使用它们。真的不只是能够到处使用它们，但更要看到他们在大多数情况下如何工作。

I recently found out about auto-properties and like them quite a lot. At this moment I am trying to use them everywhere where I can. Not really to just be able to use them everywhere, but more to see how well they work in most situations.

现在我想提出一个单身，心想：嘿，让我们尝试自动性能在这里一样。

Now I am making a singleton and thought:"Hey, let's try auto-properties here as well".

public class MySingleton
{
    public static MySingleton MySingleton { get; private set; }

    private MySingleton() {}

    static MySingleton() { MySingleton = new MySingleton(); }
}

所以我的问题是：是不是实现一个单一个好主意这样吗？

So my question is: "Is it a good idea to implement a singleton like this?"

我不要求一般单身是否是一个好主意。

I am not asking whether a singleton in general is a good idea.

推荐答案

我也不会亲自做。我不喜欢用带有私人二传手自动实现的属性，你永远不会调用，其中的真正的你想用只读变量支持的只读属性。这只是一个更多的代码行更加明确的关于你的意思：

I wouldn't personally do that. I don't like using automatically implemented properties with a private setter that you never call where really you want a read-only property backed by a read-only variable. It's only one more line of code to be more explicit about what you mean:

public sealed class MySingleton
{
    private static readonly MySingleton mySingleton;
    public static MySingleton MySingleton { get { return mySingleton; } }

    private MySingleton() {}

    static MySingleton() { mySingleton = new MySingleton(); }
}

这方法没人的，甚至的动心的到改变单一类重新分配财产，或变量，因为编译器会阻止他们。他们不得不添加setter和/或使该变量非只读，这是一个较大的变化 - 其中一个希望他们会重新考虑

This way no-one's even tempted to change the singleton class to reassign either the property or the variable, because the compiler will stop them. They'd have to add a setter and/or make the variable non-readonly, which is a bigger change - one which hopefully they'd reconsider.

在换句话说

• 是的，它会工作


• 不，我不认为这是一个很好。 。想法

由于C＃6，这是具有只读虽然自动实现的属性更容易：

As of C# 6, this is easier with read-only automatically implemented properties though:

public sealed class MySingleton
{
    public static MySingleton MySingleton { get; } = new MySingleton();    
    private MySingleton() {}         
    static MySingleton() {}
}

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