有可能引用一个像这样被初始化的类......？ [英] Is it possible to reference a class that's been initialized like this...?

问题描述

如果我初始化这样的类：

If I initialize a class like this:

Human tom = new Human(new GorillaHead(), new HumanTorso(), new HumanLegs());

我再也无法访问GorillaHead（）了吧？我必须先将它作为Human类签名之外的命名实例吗？



我尝试过：



这是有效的：

I can't access GorillaHead() again, right? I'd have to make it a named instance outside of the Human class signature first right?

What I have tried:

This works:

var gorillahead = new GorillaHead();
var humantorso = new HumanTorso();
var humanlegs = new HumanLegs();
Human tom = new Human(gorillahead, humantorso, humanlegs);

推荐答案

不，你将无法在 Human 类之外访问它们。



大概是你的人类 class应具有访问方法或属性：

No, you won't be able to access them outside of the Human class.

Presumably your Human class should have access methods or properties :

var head = tom.Head; // you will get the GorillaHead 
var torso = tom.Torso; // you will get the HumanTorso
var legs = tom.Legs; // you will get the HumanLegs

除了这里提到的那些之外，还有很多方法可以创建/控制/限制Tom的...... errr ... mmmm ...身体部位的曝光。



1.具有返回值的公共函数或值：

There are so many ways you can create/control/limit the exposure of Tom's ... errr ... mmmm ... body parts in addition to those mentioned here.

1. have public functions that return the value, or values:

public GorillaHead GetGHead(Human human, Userstatus ustatus)
{
     if(human != null && (ValidateStatus(human, ustatus) > Userstatus.Serf) && human.GorillaHead != null)
    {
         return human.GorillaHead;
    }
    return null;
}

2。使用C＃7新的Tuple语义来返回一堆不同类型的值：

2. use C# 7 new Tuple semantics to return a bunch of different types of values:

public (GorillaHead head,Torso torso, Legs legs) GetParts(Human human)
{
   return (human.GorillaHead, human.Torso, human.Legs);
}

这取决于您的班级的样子，使用公共属性或公共变量，例如 Gorilla ，然后您可以引用这些属性。请参阅此处的示例： [ Dotnetperls ]

示例：

It depends on how your class looks like, if you use public properties, or public variables e.g. Gorilla, then you can reference the properties. See example here: [Dotnetperls]
Example:

public class Human
{
    public string Gorilla { get; set; }
    public string Torso { get; set; }
    public string Legs { get; set; }

    // Constructor
    public Human(string gorilla, string torso, string legs)
    {
       Gorilla = gorilla;
       Torso = torso;
       Legs = legs;
    }
}

另见：使用构造函数（C＃编程指南）| Microsoft Docs [ ^ ]

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