Swift perguntas e respostas de entrevista
Pergunta 26. What is the purpose of the 'static' keyword in Swift?
The 'static' keyword in Swift is used to define type-level properties and methods that are associated with the type itself, rather than an instance of the type.
Pergunta 27. Explain the concept of type casting in Swift.
Type casting is the process of converting one type to another, and it can be done in Swift using 'as', 'as?', and 'as!' operators.
Pergunta 28. What is the Swift Package Manager (SPM) used for?
Swift Package Manager is a tool for managing the distribution of Swift code as source or binary packages.
Pergunta 29. How do you create a custom delegate in Swift?
To create a custom delegate in Swift, define a protocol, adopt it in the delegating class, and use optional delegate methods to notify the delegate of events.
Pergunta 30. What are the key differences between Swift and Objective-C?
Swift is a modern, safer, and more concise language compared to Objective-C. It introduces optionals, type inference, generics, and is memory-safe with Automatic Reference Counting (ARC).
Mais uteis segundo os usuarios:
- What is Swift?
- Explain optionals in Swift.
- What is the difference between 'let' and 'var' in Swift?
- What are property observers in Swift?
- What is the purpose of the 'static' keyword in Swift?