Take this quiz to test your knowledge and understanding of error handling in Swift, including throwing and catching errors and using the defer and guard statements.
1.
Which statement is used to handle errors that are not explicitly matched by other 'catch' clauses?
2.
How are error cases typically represented when declaring error types in Swift?
3.
Which of the following is an advantage of using 'defer' statements?
4.
Which statement ensures that all error cases in a 'do-catch' statement are handled?
5.
Why should 'try!' be used sparingly?
6.
What must be done to access the error object in a 'catch' block?
7.
Which Swift version introduced significant improvements to error handling?
8.
What is the purpose of the 'localizedDescription' property in an error object?
9.
What keyword is used to forcibly disable error handling in Swift?
10.
In Swift, how do you indicate that a method or function can throw errors and also return a value?
11.
What happens if you omit the 'try' keyword when calling a method that can throw an error?
12.
What is the purpose of error handling in Swift?
13.
What type of object is returned when a method call fails?
14.
Why must 'do-catch' statements be exhaustive?
15.
What does the 'defer' statement do in Swift?
16.
How can multiple error types be handled in a single 'catch' clause?
17.
What will happen if a throwing method is called using 'try!' and an error occurs?
18.
What is a 'do-catch' statement used for in Swift?
19.
How should a method that can throw an error be called?
20.
What is the purpose of the 'guard' statement in error handling?
21.
Which keyword is used to declare that a function or method can throw an error?
22.
What protocol must an error type conform to in Swift?
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