Automating JSON Handling in Swift with Codable

When working with data in Swift, especially while interacting with APIs, you often need to parse JSON responses and convert them into usable data structures. This can quickly become a tedious and repetitive task, particularly when dealing with complex or nested JSON formats.

To streamline this process, Swift provides a powerful and convenient solution — the Codable protocol.

Using Codable: A Simple Example

Let’s take a look at a basic example involving a JSON response from an API that contains user information:

In this example, the fullName property in Swift corresponds to the name field in the JSON.

By using Codable, you can automate and greatly simplify the entire process of working with JSON data in Swift. It removes the need to manually write parsing code, making your implementation:

• Cleaner
• More maintainable
• Less error-prone

Prepared by: Madi Sharipov

Astana | Nazarbayev University