在堆上构造? [英] Struct on the heap?

问题描述

所以我有这个:

class SimpleDateStructureDemo
{

  struct Date
  {
    public int year;
    public int month;
    public int day;
  }

  static void Main()
  {
    ...
  }

}

然后我看到一个例子，说对象是在堆上分配的:

And then I see an example, saying that the object is allocated on the heap:

Date dateMoonWalk = new Date();

我认为类是引用类型，结构是值类型.最后，你可以通过使用new在堆上创建一个struct类型的对象，对吗?

I thought that classes are ref type, and structs are value type. In the end, you CAN create a struct type object on the heap by just using new, right?

推荐答案

你可以只使用 new 在堆上创建一个结构类型的对象，对吗?

you CAN create a struct type object on the heap by just using new, right?

不，如果你在 Main 内部这样做，一般来说，它不会在堆上分配.不过，您可以通过多种方式在堆上分配结构体，包括将其用作类中的字段、在闭包中使用它等.

No, if you do that inside of Main, in general, it won't get allocated on the heap. You can allocate a struct on the heap in many ways, though, including using it as a field in a class, using it in a closure, etc.

new Date 语法只是将结构初始化为其默认(清零)值，但实际上并没有改变它的分配方式或位置.

The new Date syntax just initializes the struct to it's default (zeroed out) value, but doesn't actually change how or where it's allocated.

这篇关于在堆上构造?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！