Codable is a protocol that can convert a Swift object itself into and out of Data type. Codable is a type alias for Encodable and Decodable protocols. It is an easy to use official protocol for parsing JSON object from server to Swift object.
Codable is a protocol that can convert a Swift object itself into and out of
Codable is a type alias for
Decodable protocols. It is an easy to use official protocol for parsing
JSON object from server to Swift object.
Encodable is used when Swift object has to be serialised and sent to server. On the other hand,
Decodable is used when server JSON data is required to be deserialised.
Moreover, custom object conforming to
Codable can now be saved to and retrieved from
UserDefaults directly with only 3 steps. It saves a lot of boilerplate codes.
Let’s get started!
The Codable protocol is used to go from a JSON data object to an actual Swift class or struct. This is called decoding, because the JSON data is decoded into a format that Swift understands. It also works the other way: encoding Swift objects as JSON. The centerpiece of this workflow is Swift's Codable protocol.
Swift is a fast and efficient general-purpose programming language that provides real-time feedback and can be seamlessly incorporated.
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Constraining Element to Equatable means that this method is only available on arrays with Equatable elements. extension Array where Element
Here is a list of four fun reasons you should avoid using data types such as Int and String to pass along and process the data in your Swift code. And a list of alternatives to use instead, so you can write much better code with just a few small changes to your current habits.