在Objective-C枚举中找到整数值 [英] Find an integer value in Objective-C enum

问题描述

在Objective-C中是否可以查看 int 值是否在特定的枚举中？例如，在这个枚举中：

Is it possible in Objective-C to see if a int value is in a particular enum? For instance, in this enum:

enum  {
  ValidationLoginFailed         = 2000,
  ValidationSessionTokenExpired = 2001,
  ValidationSessionTokenInvalid = 2002,
  ValidationEmailNotFound       = 2003  
}; 
typedef int ValidationStatusCodes;

是否可以看到是否有任意的整数值在 ValidationStatusCodes 枚举？

is it possible to see if an arbitrary integer value is in the ValidationStatusCodes enum?

[ValidationStatusCodes contains:intResponseCode]

或至少

[self intIsInRangeofEnum:ValidationStatusCodes forValue:intResponseCode]

推荐答案

没有比简单的方法

There's no simpler way than just doing

(ValidationLoginFailed == intResponseCode ||
ValidationSessionTokenExpired == intResponseCode ||
ValidationSessionTokenInvalid == intResponseCode ||
ValidationEmailNotFound == intResponseCode)

一般来说，C对动态事物或反映类型不是很有帮助，枚举是C特征。

In general, C is not very helpful for doing dynamic things or reflecting on types, and enums are a C feature.

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