一个类应该有静态成员还是非静态成员 [英] Should a class ever have static and non-static members

问题描述

我试图找出什么时候让一个类同时具有静态和非静态功能是合适的.又名:

I'm trying to figure out when it would be appropriate for a class to have both static and non-static functions. AKA:

$obj = new ClassA;
$obj->doOOPStuff();

$something = ClassA::doStaticStuff();

^{注意:此示例在PHP中完成，但是问题与语言无关.}

似乎，如果您有一个要实例化的类，则可以静态调用的任何函数很可能属于另一个类.

It seems that if you have a class that is meant to be instantiated, any functions that can be called statically, most likely belong in another class.

在任何可行的情况下，我会有一个使用静态和非静态成员的类吗?

Is there any viable cases where I would have a class that used static AND non-static members?

推荐答案

一个示例:何时必须以特定方式进行创建.

One example: when Creation has to happen in a specific way.

class Foo {
public:
  static Foo* Create(...params...);

private:
  Foo();
};

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