Quiz will ask 20 randomly selected questions with allotted time of . You can take the quiz more than once. Once you submit the quiz, you can review how you have done, the correct the answers for each questions and the explanation for the correct the answer.
11 Modules
Which of the following statements about the 'if' expression in Scala is true?
The 'if' expression can return a value.
The 'if' expression must have an else clause.
The 'if' expression can be nested.
The 'if' expression can only evaluate Boolean expressions.
What will be the output of the following code snippet?
val x = 10 val result = if (x > 5) "Greater" else "Lesser" println(result)
Greater
Lesser
10
Error
Which of the following are valid patterns in a 'match' expression?
Literal values
Variable bindings
Type patterns
All of the above
What will be the output of the following code snippet?
val day = 3 val dayType = day match { case 1 | 7 => "Weekend" case 2 | 3 | 4 | 5 | 6 => "Weekday" } println(dayType)
Weekend
Weekday
Error
None of the above
In Scala, which of the following is true about the 'for' comprehension?
It can be used to iterate over collections.
It can only produce side effects.
It can be used with guards.
It cannot be nested.
11 Modules