参数构造函数的命名 [英] Parameters Naming for Constructor

问题描述

在Java中，通常，我可以使我的构造函数的参数与成员变量同名。

In Java, usually, I can have my constructor's parameters same name as member variables.

public A(int x)
{
    this.x = x;
}

private int x;

在C ++中，我不能。通常，我必须这样做。

In C++, I can't. Usually, I have to do it this way.

public:
    A(int x_) : x(x_) 
    {
    }

private:
    int x;

有更好的方法吗？因为构造函数的参数名看起来很丑陋，当IDE IntelliSense弹出构造函数参数窗口。

Is there any better way? As the constructor parameters name look ugly, when IDE IntelliSense pop up the constructor parameters windows.

推荐答案

您想要：

struct A {
  int x;
  A(int x) : x(x) {
    foo(this->x);
    // if you want the member instead of the parameter here
  }
};

< c $ c>），我为非公开成员做。如果在这个例子中 x 是public的，我会这样做，如果我认为ctor的参数更容易读，看看重命名ctor的参数。

Though I also commonly use stylistic names for members (e.g. _x), I do it for non-public members. If x is public as in this example, I would do it like this, and look at renaming the ctor's parameter if I thought it would be more readable.

编辑：由于人们似乎被侧线，我会在 _x 中澄清。该标准保留一些标识符名称：

Since people seem to be getting sidetracked, I'll clarify on _x. The standard reserves some identifier names:

• 任何名称空间中都有两个相邻的下划线




• 任何在全局范围内带有前导下划线的名称

由于成员范围限于类，它们不属于第三类。也就是说，这将是很高兴不继续侧线。 :)如果你愿意，随时对C ++中的保留标识符提出一个问题，并在评论中发布一个链接。

Since members are scoped to the class, they do not fall in the third category. That said, it would be nice to not continue getting sidetracked. :) Feel free to ask a question about reserved identifiers in C++ and post a link to it in the comments if you want.

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