奇怪的构造函数 [英] Strange constructor

问题描述

好吧，我会在这里很简单，我只是有一段代码在c ++，我不知道我真的了解，需要一些帮助。

Well, I'm gonna be pretty straightforward here, I just have a piece of code in c++ which I'm not sure I really understand and need some help with.

好吧，为了简化让我只是说我有一个类定义如下：（真正的类有点复杂，但这是重要的）

Ok, to simplify lets just say I have a class that is defined like this: (the real class is a little bit more complicated, but this is what matters)

class myClass : public Runnable {
    Semaphore *m_pMySemaphore;
    __Queue<Requests> *m_pQueue;
    Request m_Request;
    VetorSlotBuffer *m_vetorSlotBuffer;
}

到这里没有什么是错误的，myClass只是一个普通的类有3成员实际上是指向其他类的指针和Request类的对象，这些类的实现对我这里不重要。

Up to here nothing is wrong, myClass is just a regular class which has 3 members that actually are pointers to other classes and an object of the class Request, the implementation of those classes not being important for my point here.

然后当这个人实现myClass的构造函数他或她这样做：

Then when this person implemented the constructor for myClass he or she did this:

myClass :: myClass（）：m_pMySemaphore（0），m_pQueue（0），m_vetorSlotBuffer ）{
}

很明显，这三个变量被构造函数看作是指针，对？但是什么样的语法是什么？我是通过这样做的指针设置为null吗？我已经看过一点c ++已经，但从来没有发现这样的东西。

It's pretty evident that those three variables are treated like that by the constructor because they are pointers, am I right? but what kind of syntax is that? am I setting the pointers to null by doing that? I've seen a little bit of c++ already but never found something like that.

其次，在构造函数声明后处理：我已经看过，但从来没有花时间调查。这是一个内在的类还是什么？

And secondly, what's the deal with the ":" after the constructor declaration? that I've seen but never took the time to investigate. Is this like an inner class or something?

非常感谢你。
Nelson R. Perez

Thank you very much in advance. Nelson R. Perez

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