Explain the key differences between Swift and Objective-C. Compare them in terms of syntax, type safety, runtime behavior, interoperability, and practical usage in iOS codebases.
Syntax and readabilityType safety and optionalsStatic vs dynamic runtime behaviorInteroperability in mixed-language projectsWhen each language is still used| Dimension | Swift | Objective-C |
|---|---|---|
| Syntax | Concise | Verbose |
| Safety | Strong compile-time checks | More runtime flexibility |
| Runtime | More static by default | Highly dynamic |
| Use Today | New development | Legacy and interoperability |