English 中文(简体)
使用自指针向类别数据成员分配值时的差异
原标题:Difference when assigning values to class data members using self pointer

假设我有一个类 像:

Class MyClass 
{ 
  int myVar1;
  int myVar2;

  void myMethod(); 
}

以下两种价值分配之间是否有差别?

void MyClass::myMethod()
{
   //VARIABLE ASSIGNMENT
   myVar1 = 99;

   //USING POINTER TO CLASS
   此项 - & gt;myVar2 = 99;
}

何为使用

此项 - & gt;

变量分配中的指针(例如通过函数等通过类别时的其他情况除外)?

最佳回答

同样的事情, 除非您碰巧在范围中有两个同名变量。 在此情况下, 您可以使用此 & gt; 来区分 。

问题回答

它对下列情况有不同:

void MyClass::myMethod(int myVar1)
{
   myVar1 = 99; //doesn t change the member

   this->myVar1 = 99; //changes the member
}

以你的情况来说,没有区别。

没有区别。 有时使用 this- gt; 辅助工具来模糊, 但这里没有 。





相关问题
Undefined reference

I m getting this linker error. I know a way around it, but it s bugging me because another part of the project s linking fine and it s designed almost identically. First, I have namespace LCD. Then I ...

C++ Equivalent of Tidy

Is there an equivalent to tidy for HTML code for C++? I have searched on the internet, but I find nothing but C++ wrappers for tidy, etc... I think the keyword tidy is what has me hung up. I am ...

Template Classes in C++ ... a required skill set?

I m new to C++ and am wondering how much time I should invest in learning how to implement template classes. Are they widely used in industry, or is this something I should move through quickly?

Print possible strings created from a Number

Given a 10 digit Telephone Number, we have to print all possible strings created from that. The mapping of the numbers is the one as exactly on a phone s keypad. i.e. for 1,0-> No Letter for 2->...

typedef ing STL wstring

Why is it when i do the following i get errors when relating to with wchar_t? namespace Foo { typedef std::wstring String; } Now i declare all my strings as Foo::String through out the program, ...

C# Marshal / Pinvoke CBitmap?

I cannot figure out how to marshal a C++ CBitmap to a C# Bitmap or Image class. My import looks like this: [DllImport(@"test.dll", CharSet = CharSet.Unicode)] public static extern IntPtr ...

Window iconification status via Xlib

Is it possible to check with the means of pure X11/Xlib only whether the given window is iconified/minimized, and, if it is, how?

热门标签