在创建类的属性时如何分配内存？ [英] How is memory allocated when you create a property of class?

问题描述

  public class A 
 {
 public List< string> AList {get;组; } 
} 
  

然后我创建一个类的对象：

  A objectA = new A（）; 
 objectA.AList = new List< string>（）{1，2，3}; 
  

我的问题是如何将内存分配到堆中？我的意思是将 objectA.AList 分配给 objectA （image1）或作为堆中单独的对象（image2 ）

imgur.com/M6vIU.pngrel =nofollow noreferrer>

Image2：

解决方案

正确的答案是：图片3. 我不打算画这个，但是您的示例将导致堆上的5个对象。

对象（实例）没有名称，但它们被以下引用引用：

$ b

1. objectA


2. objectA.AList


3. objectA.AList [0] li>
   
4. objectA.AList [1]


5. objectA.AList [2] li>
   

每个字符串也是一个对象。

$ b $ < objectA 实例只包含对List的引用，List包含对字符串的引用数组。 3被使用，更多可能被分配，仍然是 null 。

。

I have the following class:

public class A
{
    public List<string> AList { get; set; }
}

Then I create object of a class:

A objectA = new A();
objectA.AList = new List<string>() { "1", "2", "3" };

My question is how memory will be allocated in a heap? I mean will be objectA.AList allocated inside of objectA (image1) or as a separate object in a heap(image2)

Image1:

Image2:

解决方案

The correct answer is : Image 3.

I'm not going to draw this but your example leads to 5 objects on the Heap.

Objects (instances) don't have names but they are referred to by the following references:

1. objectA
2. objectA.AList
3. objectA.AList[0]
4. objectA.AList[1]
5. objectA.AList[2]

Each string is also an object on its own.

The objectA instance only contains a reference to the List, and the List holds an array of references to strings. 3 are used, more might be allocated and still be null.

None of these objects lives 'inside' another.

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