如何使用Swift的Codable编码成字典？

如果您不介意数据移位，可以使用以下方法：

extension Encodable {  func asDictionary() throws -> [String: Any] {    let data = try JSonEnprer().enpre(self)    guard let dictionary = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as? [String: Any] else {      throw NSError()    }    return dictionary  }}

或可选变体

extension Encodable {  var dictionary: [String: Any]? {    guard let data = try? JSonEnprer().enpre(self) else { return nil }    return (try? JSONSerialization.jsonObject(with: data, options: .allowFragments)).flatMap { $0 as? [String: Any] }  }}

假设

Foo

Codable

Encodable

let struct = Foo(a: 1, b: 2)let dict = try struct.asDictionary()let optionalDict = struct.dictionary