iOS_swift_codables

Swift Playground for Exploring Swift4 Codables for JSON Parsing

Requirements

• Xcode 9 and above
• Swift 4

To Begin

• Open SwiftCodables.playground in Xcode
• Start with Toc.xcplayground page which from where you can navigate to the other playground pages. Make sure you check the Render Documentation checkbox.

Execution

• Navigate to the playground that you want to Execute a playground by clicking on the "Run" button

Examples

Examples demonstrating transformation between JSON and Swift native types using swift4 Codables. Each chapter looks at various use cases.

• The Basics
  • The examples introduce the Swift Encodable and Decodable protocols
• Date
  • The example discuss the use of built in Date encoders/decoders
• Simple Custom Codable Type
  • The examples discuss the use of nested Codable types
• Introduction to Codable Keys
  • The examples introduce the CodableKey protocol and how you can use it to specify the mapping of JSON-native properties
• Containers
  • The examples introduce the concept of Containers includeing KeyedContainer, UnkeyedContainer and ValueContainer
• Changing Types
  • The examples demonstrate how you can change the type of a property to an appropriate native type when it is tranformed to a swift type and back
• Flattening Types
  • The examples demonstrate how you can flatten a nested JSON object when converting to native type
• Associative Enums
  • The examples demonstrate the encoding / decoding of a swift associative enum type to correpsonding JSON types
• Subclasses
  • The examples demonstrate the encoding/decoding of native subclasses to corresponding JSON types
• Dynamic Coding Keys
  • The examples demonstrate the encoding / decoding JSON objects that hold dynamic set of keys
• Context
  • The examples demonstrate the use of context data for encoding/decoding
• All Together
  • A more complete example that puts together all the concepts showcased in previous examples