Question 1

How to dynamically set a property value using Runtime?

Accepted Answer

Use the PropertyInfo's set method on an object cast to Any, as demonstrated in the README with the User struct's username property—this allows typeless manipulation without compile-time types.

Question 2

Runtime vs Swift's native Mirror: which should I use?

Accepted Answer

Runtime provides more detailed metadata and dynamic property manipulation, while Mirror is simpler but limited to read-only introspection. Choose Runtime for advanced use cases like serialization or dependency injection.

Question 3

Does Runtime work with SwiftUI or Combine frameworks?

Accepted Answer

Yes, Runtime can introspect SwiftUI views or Combine publishers, but performance and compatibility should be tested, as dynamic introspection might conflict with Swift's reactive paradigms or cause overhead.

Question 4

Can Runtime access private properties in Swift classes?

Accepted Answer

It often can via type metadata, but Swift's access control may impose restrictions; the library is designed for runtime introspection, but edge cases with private members might require careful handling.

Question 5

What's the performance impact of using Runtime in a production app?

Accepted Answer

Runtime adds reflection overhead, so it's best used sparingly in non-critical paths; profile your app to ensure acceptable performance, especially for frequent property access or type inspections.

Question 6

How to handle errors when typeInfo fails in Runtime?

Accepted Answer

The typeInfo function throws errors, so use try-catch blocks to handle cases like unsupported types or runtime failures, ensuring graceful fallbacks in dynamic scenarios.

Runtime

What is Runtime?

Overview

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Frequently Asked Questions