Ios 如何获得valueForKey？

解析后，我从json得到如下响应：

请让我知道如何从以下内容中获取“operatingDay”的值

print("Array s: \(cashPointOperatingDays[0])")
        guard let firstDict = cashPointOperatingDays[0] as? [[String: String]] else {
            return
        }
        print("First Dictionary: \(firstDict["operatingDay"])") //error showing line
    }

但是我越来越

无法使用“String”类型的索引为“[[String:String]]”类型的值下标错误

---

您的数组实际上不是数组，而是字典

print("JSON object  s: \(cashPointOperatingDays[0])")
        guard let firstDict = cashPointOperatingDays[0] as? [String: String] else {
            return
        }
        print("First Dictionary: \(firstDict["operatingDay"])") //error showing line

---

再看看我的答案

print("JSON object  s: \(cashPointOperatingDays[0])")
        guard let firstDict = cashPointOperatingDays[0] as? [String: String] else {
            return
        }
        print("First Dictionary: \(firstDict["operatingDay"])") //error showing line