Swift Protocol-Oriented Programming Mastery Hub: The Industr
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In the context of "The Complete Swift Protocol Essentials Course 2026," which of the following best describes the primary benefit of using protocols to define behavior in Swift, particularly when aiming for "Swift Protocol-Oriented Programming Mastery Hub: The Industry Foundation"?
Consider a scenario in "The Complete Swift Protocol Essentials Course 2026" where you have a `DataSource` protocol with a `fetchData() -> Data` requirement. If you have two types, `NetworkService` and `LocalCache`, both conforming to `DataSource`, what is the most idiomatic POP approach to pass an instance of either to a function that needs to retrieve data, adhering to "Swift Protocol-Oriented Programming Mastery Hub: The Industry Foundation" principles?
In the context of "The Complete Swift Protocol Essentials Course 2026," when discussing protocol extensions and their role in "Swift Protocol-Oriented Programming Mastery Hub: The Industry Foundation," what is the primary purpose of providing default implementations within a protocol extension?
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