C#，结构 vs 类，更快? [英] C#, struct vs class, faster?

问题描述

可能的重复:
哪个最适合数据存储结构/类? >

考虑我有一个 Employee 对象的示例，该对象具有年龄、姓名、性别、职称、薪水等属性.我现在有一个列表，我想用一堆员工填充(每个 Employee 实例都是唯一的).

Consider the example where I have an Employee object with attributes like age, name, gender, title, salary. I now have a list i want to populate with a bunch of Employees (each Employee instance is unique).

就速度和内存占用而言，将员工创建为结构体还是类更可取?

In terms of just speed and memory footprint, is it more preferable to create the employee as a Struct or a Class?

欢迎在上述场景中提供有关结构与类的任何其他警告

Any additional caveats regarding Struct vs Class in the above scenario are welcome

推荐答案

结构仅用于应该具有类似值的行为的相对较小的结构.

Structs are to be used only for relatively small structures that should have value-like behaviour.

• 类和结构差异
• 在类和结构之间进行选择

除非类型具备以下所有条件，否则不要定义结构特点:

• 它在逻辑上代表一个单一的值，类似于原始类型(整数、双精度等).
• 它的实例大小小于16 个字节.
• 它是不可变的.
• 不必经常装箱.

您的类型违反了前两条准则，可能也违反了第三条准则.所以你绝对应该在这里使用一个类.

Your type breaks the first two guidelines, and probably also the third. So you should definitely use a class here.

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