codable-nscoding bridge

codablebridge.swift

import Foundation

/// This isn't safe to use before Swift gets ABI stability, because generic classes
/// could change their names. Also, be sure to register bridges with the Obj-C runtime
/// if using to decode during iOS state restoration.
///
class CodableBridge<Wrapped: Codable>: NSObject, NSSecureCoding {
  let value: Wrapped
  init(_ value: Wrapped) { self.value = value }

  static var supportsSecureCoding: Bool { return true }

  required init?(coder aDecoder: NSCoder) {
    guard let data = aDecoder.decodeData() else { return nil }
    let archiver = NSKeyedUnarchiver(forReadingWith: data)
    guard let value = archiver.decodeDecodable(Wrapped.self, forKey: "value") else { return nil }
    self.value = value
  }

  func encode(with aCoder: NSCoder) {
    let d = NSMutableData()
    let archiver = NSKeyedArchiver(forWritingWith: d)
    try? archiver.encodeEncodable(value, forKey: "value")
    archiver.finishEncoding()
    aCoder.encode(d)
  }
}

Hi, Karl!
How to use it?

@karwa How to use it?