方便快捷的Codable的extension,解放你的双手

使用方法eg:

struct Model {
    let app: String
    let quota: Double
    let rate: String
    let time: String
    let id: Int
    let icon: URL?
    let url: URL? // 这个字段可能为空
 }
 
 extension Model: Codable {
    enum ModelCodingKey: String, CodingKey {
        case app   = "name"
        case quota = "amount"
        case rate  = "interest"
        case time  = "term"
        case id
        case icon  = "logoUrl"
        case url = "linkeUrl"
   }
 }

let c = try decoder.container(keyedBy: ModelCodingKey.self)

1: 解放decode(type, forKey: key)

app = try c[.app, String.self]()

2: 解放 decodeIfPresent----第三个参数是设置默认值的

url = c[.url, URL.self, nil]

3: 方便快捷的把后台String类型转化为Int/Double/Float/URL......(如果想使用默认值可以使用??)

icon = c[.icon, URL.self] // 因为某些带中文的url无法解析,so。。。。。
id = c[.id, Int.self] ?? 0
quota = c[.quota, Double.self] ?? 0

Git地址