Explain the key differences between Swift and Objective-C. Compare them in terms of syntax, type safety, runtime behavior, interoperability, and when you would choose one over the other in iOS development.
| Area | Why It Matters |
|---|---|
| Syntax | Affects readability and onboarding speed |
| Safety | Reduces runtime bugs and null-related errors |
| Runtime | Determines flexibility for reflection and dynamic behavior |
| Interop | Important for maintaining older iOS codebases |