成员名称和构造函数参数名称之间的冲突 [英] Conflicts between member names and constructor argument names

问题描述

可能的重复:
C++ 中的成员与方法参数访问

我有一个包含一些成员的类，例如 x、y、width 和 height.在它的构造函数中，我不会这样做:

I have a class that has some members, like x, y, width and height. In its constructor, I wouldn't do this:

A::A(int x, int y, int width, int height)
{
    x = x;
    y = y;
    width = width;
    height = height;
}

当用 g++ x、y、width 和 height 编译时，这真的没有意义> 变成奇怪的值(例如 -1405737648).

This doesn't really make sense and when compiled with g++ x, y, width, and height become weird values (e.g. -1405737648).

解决这些命名冲突的最佳方法是什么?

What is the optimal way of solving these naming conflicts?

推荐答案

您可以使用具有相同名称的初始化列表:

You can use initialization lists just fine with the same names:

A::A(int x, int y, int width, int height) :
    x(x),
    y(y),
    width(width),
    height(height)
{
}

如果您不想使用相同的名称，另一种方法是使用不同的名称.我想到了一些匈牙利符号的变化(我可能会讨厌这个):

An alternative is to use different names, if you don't want to have the same names. Some Hungarian-notation variation comes to mind (I might get some hate for this):

//data members
int x_;
int y_;
int width_;
int height_;
//constructor
A::A(int x, int y, int width, int height) :
    x_(x),
    y_(y),
    width_(width),
    height_(height)
{
}

但第一个建议并没有错.

But there's nothing wrong with the first suggestion.

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