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Test Your Knowledge: Swift - Summary of ?, !, and ?? in Optionals

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Test on the usage of various Optionals operators (?, !, ??) in Swift

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Swift - Summary of ?, !, and ?? in Optionals

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Swift - Summary of ?, !, and ?? in Optionals

Review Answers for Questions in this Test

1. Which operator is used force unwrap an optional in Swift?

2. Which operator would you use to provide a default value if the value of the optional turns out to be nil?

3. Which of following is an example of Optional Chaining?

4. Which of the following is implicitly unwrapping the optional?

5. Which of the following declares an optional?

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