为什么用 {} 构造对象时只忽略这个变量的值？

Question

我有一个 APIRequest 类，我需要一个 isInBackground 变量的默认值。

APIRequest 类简化：

public class APIRequest
{
    public string url;
    public bool isInBackground = true;
}

当我这样做时，isInBackground 的值总是被忽略并设置为默认值：

APIRequest rq = new APIRequest{
        url = "/user/suggest/" + pseudo,
        isInBackground = false
};

然后我记录该值并得到“真”，但是 url 是正确的值...

将其设置为 'False' 的唯一方法是这样做

rq.isInBackground = false;

那么这个值确实是'False'

所以我的问题是它为什么会这样？是不是因为 isInBackground 有默认值？

public class APITest {
    public string url;
    public bool background = true;
}

public class TestClass : MonoBehaviour {

   // Use this for initialization
   void Start () {
       APITest t = new APITest{
          url = "coucou",
          background = false
      };

      Debug.Log(" url: " + t.url + " background: " + t.background);
  }
}

编辑：尝试将默认值设置为“False”并将变量设置为“True”后，问题不会发生...

编辑以显示完整代码：

private void ShowPseudoSuggestionsFor(string pseudo){
    Debug.Log("Get suggestions");
    RemoteRequest r = RemoteRequest.GetNewRequest("PseudoSuggestions");
    APIRequest rq = new APIRequest{
        url = "/user/suggest/" + pseudo,
        successCallback = OnSuggestionsLoaded,
        successCallbackArgs = new Hashtable{
            { "pseudo", pseudo }
        },
        isInBackground = false
    };
    //rq.isInBackground = false;
    Debug.Log("isInBackground : " + rq.isInBackground);
    r.SetRequest(rq);
    Debug.Log("isInBackground : " + rq.isInBackground);
    r.SendRequest();
}

完整的 APIRequest 类：

public class APIRequest
{
    public string url;                                          /*!< Url you wish to send you request at */
    public HTTPMethod method = HTTPMethod.GET;                                  /*!< HTTP method (GET, POST, PUT, DELETE) */
    public Dictionary<string, string> headers = new Dictionary<string, string>();                   /*!< Headers, add one with headers.Add(<headerName>, <headerValue>) */
    public byte[] payload;                                      /*!< If you need to send POST or PUT data create a WWWForm, add the fields you need in it and then set payload to be <yourForm>.data */

    public bool resendOnFailure = false;                        /*!< Should we resend the request if it fails ? */
    public bool resendOnTimeout = false;                        /*!< Should we resend the request if it times out ? */ 
    public bool isInBackground = true;                          /*!< Should we send request start and completed events */
    public bool askBeforeResending = false;                     /*!< Should we ask user before resending request ? */
    public Rect askingPopupRect;                                /*!< Size of the popup that will ask user to resend request */
    public string askingPopupTitle;                             /*!< Title for resend request popup */
    public string askingPopupMessage;                           /*!< Message for resend request popup */
    public GUI.WindowFunction drawAskingPopup;                  /*!< Function responsible for drawing the resend request popup */

    public float timeout = 10f;                                     /*!< Time until the request is considered a failure */
    public int maxAttempts = 1;                                 /*!< Maximum number of attempts before which request will be resent, upon reaching it, no more attempts to resend will be made */

    public RequestCallback successCallback;                     /*!< Function called when server responded with a status code 2XX (success) */
    public RequestCallback failureCallback;                     /*!< Any other status code than 2XX will trigger this function (failure) */
    public Hashtable failureCallbackArgs;                       /*!< This hashtable will be passed along to the 'successCallback' function as a mean to provide it with arguments */
    public Hashtable successCallbackArgs;                       /*!< This hashtable will be passed along to the 'failureCallback' function as a mean to provide it with arguments */

    /** Returns a string representation of the request that is human readable
     * \return A string describing the request parameters
     */
    public override string ToString(){

        string result = "Request to url: " + url + " method: " + method.ToString () + "\nHeaders:\n";
        foreach(KeyValuePair<string, string> kvp in headers){
            result += kvp.Key + " -> " + kvp.Value + "\n";
        }
        result += "Params :\n";
        result += "resendOnFailure: " + resendOnFailure + "\n";
        result += "resendOnTimeout: " + resendOnTimeout + "\n";
        result += "askBeforeResending: " + askBeforeResending + "\n";
        result += "timeout: " + timeout + "\n";
        result += "maxAttempts: " + maxAttempts + "\n";
        result += "isInBackground: " + isInBackground + "\n";
        return result;
    }
}

Answer 1

此代码在 Unity 中失败，因为它们使用 Mono。该错误仅在使用 Mono 时发现，与 Spoke44 指出的 C# 语言无关，解决方案是使用属性：

http://answers.unity3d.com/questions/59530/microsoft-vs-mono-c-compiler-initialisation-differ.html#answer-59539