使用值定義結構數組

Question

我可以使用如下的值定義結構/類數組嗎？以及如何？

struct RemoteDetector 
    { 
     public string Host; 
     public int Port; 
    } 

    RemoteDetector oneDetector = new RemoteDetector() { "localhost", 999 }; 
    RemoteDetector[] remoteDetectors = {new RemoteDetector(){"localhost",999}};   

編輯：

RemoteDetector oneDetector = new RemoteDetector() { Host = "localhost", Port = 999 }; 
    RemoteDetector[] remoteDetectors = { new RemoteDetector() { Host = "localhost", Port = 999 } };   

Answer 1

你可以這樣做，但不推薦使用它，因爲你的結構是可變的。你應該努力爭取與你的結構不變。因此，要設置的值應該通過構造函數傳遞，該構造函數在數組初始化中也足夠簡單。

struct Foo 
{ 
    public int Bar { get; private set; } 
    public int Baz { get; private set; } 

    public Foo(int bar, int baz) : this() 
    { 
     Bar = bar; 
     Baz = baz; 
    } 
} 

... 

Foo[] foos = new Foo[] { new Foo(1,2), new Foo(3,4) }; 

Answer 2

你想用C#'s object and collection initializer syntax這樣的：我的價值觀之前，應使用變量名

struct RemoteDetector 
{ 
    public string Host; 
    public int Port; 
} 

class Program 
{ 
    static void Main() 
    { 
     var oneDetector = new RemoteDetector 
     { 
      Host = "localhost", 
      Port = 999 
     }; 

     var remoteDetectors = new[] 
     { 
      new RemoteDetector 
      { 
       Host = "localhost", 
       Port = 999 
      } 
     }; 
    } 
} 

編輯：這是非常重要的，你跟隨Anthony's advice並使該結構不可變。我在這裏展示了一些C＃的語法，但使用結構時的最佳做法是使它們不可變。