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JSON to Swift Struct Converter: Generate Swift Models
Convert JSON data structures to Swift structs with automatic type inference and Codable protocol support. Perfect for creating model layers in iOS and macOS applications.
JSON
Swift Structs
Code Generation Guide
Type Mapping
- •
Swift Types
String, Int, Double, Bool, and [Type] for arrays
- •
Nested Structures
Automatic struct creation for nested objects
- •
Optional Support
Properties marked as optional with "?"
Code Features
- •
Codable Protocol
Automatic JSON encoding and decoding
- •
MARK Comments
Swift-style section markers
- •
Clean Code
Swift naming conventions and formatting
Common Use Cases
API Integration
- • Network responses
- • Data models
- • REST APIs
- • GraphQL types
App Development
- • View models
- • Configuration
- • Local storage
- • State management
Data Handling
- • File parsing
- • Data migration
- • Cache models
- • Analytics events
Frequently Asked Questions
How does Codable work?
The Codable protocol in Swift provides automatic JSON encoding and decoding. When you conform to Codable, Swift automatically generates the necessary code to convert between JSON and your Swift structs.
Why use optional properties?
Optional properties (marked with ?) handle cases where JSON values might be missing or null. This follows Swift's safety-first approach and prevents runtime crashes from missing data.
How are arrays handled?
JSON arrays are converted to Swift array types with the appropriate element type. For example, an array of numbers becomes [Int] or [Double], and an array of objects becomes [CustomType].
Can I use this with SwiftUI?
Yes! The generated structs work perfectly with SwiftUI. Just add '@Published' to properties in an ObservableObject or make the struct conform to Observable for SwiftUI data binding.
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