静态类和单例 [英] static class and singleton

问题描述

不是一个具有所有静态成员/方法的类是一种单例设计模式？特别是有这样的类有什么不利吗？详细解释会有帮助。

解决方案

这种类称为 monostate - 它与单例有些不同。

为什么要使用单稳态单身？在他们的原始文件中模式，Bell& Crawford建议三种原因（由我改写）：

• 更自然的存取语法






我必须承认，我没有找到任何这些特别引人注目。另一方面，单状态绝对不比单例更糟。




Isn't a class with all static members/methods a kind of singleton design pattern? Is there any disadvantage in particular of having such classes? A detailed explanation would help.

解决方案

This kind of class is known as a monostate - it is somewhat different from a singleton.

Why use a monostate rather than a singleton? In their original paper on the pattern, Bell & Crawford suggest three reasonns (paraphrased by me):

• More natural access syntax
• singleton lacks a name
• easier to inherit from

I must admit, I don't find any of these particularly compelling. On the other hand, the monostate is definitely no worse than the singleton.

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