Swift 4.1, Encodable, Decodable, Codable, Encoding, Decoding, Example, Demos, App Development, Development, Bleeding edge, Latest Swift 4.1 feature - keyEncoding/keyDecoding strategy Can't believe it's been 3 and half years but I still didn't run a single Swift program over command line. However, that is no longer going to happen. The occasion is an unreleased