C＃使用 - >指针符号？ [英] Does C# use the -> pointer notation?

问题描述

我试图学习C＃，我熟悉C ++结构指向符号 - >我很好奇，如果这跨进了C＃。

I am trying to learn C# and I am familiar with the C++ struct pointing notation -> and I was curious if that crossed over into C#.

示例： / p>

example:

someStruct->someAttribute += 1;

推荐答案

在C＃中有指针符号，使用 unsafe 关键字。

There is pointer notation in C#, but only in special cases, using the unsafe keyword.

使用。解除常规对象的引用，但如果要写快速代码，避免垃圾收集器移动的东西），因此安全使用指针算术，然后你可能需要 - > 。

Regular objects are dereferenced using ., but if you want to write fast code, you can pin data (to avoid the garbage collector moving stuff around) and thus "safely" use pointer arithmetic, and then you might need ->.

请参阅指针类型（C＃编程指南），然后点击此示例在C＃中使用 - > 。

See Pointer types (C# Programming Guide) and a bit down in this example on the use of -> in C#.

看起来像这样链接）：

struct MyStruct 
{ 
    public long X; 
    public double D; 
}

unsafe static void foo() {
   MyStruct myStruct = new MyStruct(); 
   pMyStruct = & myStruct;

   // access:

   (*pMyStruct).X = 18; 
   (*pMyStruct).D = 163.26;

   // or

   pMyStruct->X = 18; 
   pMyStruct->D = 163.26;
}

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