递归泛型类型 [英] Recursive generic types

问题描述

时可以定义在C＃泛型类型引用本身？

例如。我想定义一个字典＆LT;>持有其类型为TValue（一层次）

 词典＆LT;字符串，字典＆LT;字符串，字典＆LT;字符串[...]＆GT;＆GT;＆GT;
 

解决方案

尝试：

 类StringToDictionary：字典＆LT;字符串，StringToDictionary＆GT; {}
 

然后，你可以写：

  VAR东西=新StringToDictionary
        {
            {果，新StringToDictionary
                {
                    {苹果，空}，
                    {香蕉，NULL}，
                    {柠檬，新StringToDictionary {{夏普，NULL}}}
                }
            }，
        };
 

递归的一般原则：找到某种方式来给一个名称递归模式，因此它可以通过名字引用本身

Is it possible to define a generic type in C# that references itself?

E.g. I want to define a Dictionary<> that holds its type as TValue (for a hierarchy).

Dictionary<string, Dictionary<string, Dictionary<string, [...]>>>

解决方案

Try:

class StringToDictionary : Dictionary<string, StringToDictionary> { }

Then you can write:

var stuff = new StringToDictionary
        {
            { "Fruit", new StringToDictionary
                {
                    { "Apple", null },
                    { "Banana", null },
                    { "Lemon", new StringToDictionary { { "Sharp", null } } }
                }
            },
        };

General principle for recursion: find some way to give a name to the recursive pattern, so it can refer to itself by name.

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