類實例化功能

Question

你好我想學C＃中，我遇到了這個代碼從C＃教程：

Public Class A() 
{ 
    Public A() : this(capacity:10) 
    { 
    } 

    public int capacity 
    { 
     get { return _buffer.length;} 
    } 
} 

我只是不明白，爲什麼他Public A()和this(capacity:10)之間使用:。

我不知道Google 要搜索什麼，所以我決定在這裏問一下。

我的問題是：這是用來幹什麼的？爲什麼？

Answer 1

提供的代碼未編譯。也許，代碼是這樣的：

// lower case for "public" and "class" 
    public class A { 
    // _buffer is addressed in "capacity" property, let it be an array 
    private int[] _buffer = new int[10]; 

    // this constructor is mandatory for the code below 
    public A(int capacity) { 
    } 

    // Now, your question: 
    // "this(capacity: 10)" calls the costructor above 
    // "public A(int capacity)" 
    // while passing the "capacity" parameter by its name 
    public A() : this(capacity: 10) 
    { 
    } 

    public int capacity { 
    get { 
     return _buffer.Length; 
    } 
    } 

如果我猜得不錯this(capacity: 10)是構造public A(int capacity)同時通過名路過capacity