我最近尝试使用 Decodable 协议将 JSON 解析为模型,并且我已经成功地做到了。但现在我想使用 RxSwift 实现双向绑定。为此,我需要声明“变量<>”类型的变量。这是我模型中的一个片段:
struct Person : Decodable
{
var batchcomplete = String()
var `continue` = Continue()
var query = Query()
var limits = Limit()
enum CodingKeys: String,CodingKey
{
case batchcomplete
case `continue`
case limits
case query
}
init(from decoder: Decoder) throws
{
let container = try decoder.container(keyedBy: CodingKeys.self)
batchcomplete = try container.decode(String.self, forKey: .batchcomplete)
`continue` = try container.decode(Continue.self, forKey: .`continue`)
limits = try container.decode(Limit.self, forKey: .limits)
query = try container.decode(Query.self, forKey: .query)
}
}
现在,如果我将“批处理完成”从 String() 更改为 Variable,init() 方法会引发错误:
No 'decode' candidates produce the expected contextual result type 'Variable<String>'.
进行这些更改,您将收到错误消息。
var batchcomplete = Variable<String>("")
batchcomplete = try container.decode(Variable<String>.self, forKey: .batchcomplete)