像Javascript這樣在C ++中訪問HttpStatusCode

Question

我正在ESP上編寫Arduino項目。

在Javascript（客戶端）中，我有以下內容：

HttpStatusCode = { // Top10
  OK: 200,
  Created: 201,
  NoContent: 204,
  NotModified: 304,
  BadRequest: 400,
  Unauthorized: 401,
  Forbidden: 403,
  NotFound: 404,
  Conflict: 409,
  InternalServerError: 500
};

在我的代碼中

   if( this.status == HttpStatusCode.OK ) {
     ...
   }

現在，在C ++（服務器端）中，您如何做同樣的事情？

   if( status == HttpStatusCode.OK ) {
     ...
   }

Answer 1

在C ++ 11和更高版本中，您可以使用作用域enum ，例如：

enum class HttpStatusCode { // Top10
    OK = 200,
    Created = 201,
    NoContent = 204,
    NotModified = 304,
    BadRequest = 400,
    Unauthorized = 401,
    Forbidden = 403,
    NotFound = 404,
    Conflict = 409,
    InternalServerError = 500
};

否則，請使用其中包含static常量的class或struct ，例如：

struct HttpStatusCode {
    static const int OK = 200;
    static const int Created = 201;
    static const int NoContent = 204;
    static const int NotModified = 304;
    static const int BadRequest = 400;
    static const int Unauthorized = 401;
    static const int Forbidden = 403;
    static const int NotFound = 404;
    static const int Conflict = 409;
    static const int InternalServerError = 500;
};

無論哪種方式，您都可以像這樣使用它們：

if( status == HttpStatusCode::OK )