Swift 面试题与答案
Test your skills through the online practice test: Swift Quiz Online Practice Test
问题 31. Explain the concept of value semantics in Swift.
Value semantics mean that the value of a type is copied when assigned to a new variable or passed as an argument, ensuring that each instance is independent.
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问题 32. What is the 'NSRunLoop' equivalent in Swift?
In Swift, the equivalent to 'NSRunLoop' is 'RunLoop', which is used for managing input sources on a thread.
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问题 33. How does Swift handle multiple inheritance?
Swift does not support multiple inheritance directly. Instead, it uses protocols to achieve similar functionality through protocol-oriented programming.
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问题 34. Explain the difference between '==', '===', and 'isEqual' in Swift.
'==' is used to check for value equality, '===' is used to check for reference equality, and 'isEqual' is typically used for comparing objects in Objective-C and is bridged to '==' in Swift.
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问题 35. What is the purpose of the 'DispatchQueue' class in Swift?
'DispatchQueue' is used for managing the execution of tasks serially or concurrently in a multithreaded environment.
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