Scala Interview Questions

Q: What about this one? println("frankl"||true)

The correct answer is This code throws an error

Q: What is a higher-order function in Scala?

The correct answer is Both of these

Q: Select the correct statements about the apply and unappl

The correct answer is All of the above

Q: Select the correct statements about Array and ArrayBuffer.

The correct answer is An ArrayBuffer is of variable size

Take as many assements as you can to improve your validate your skill rating

Total Questions: 5

1. What about this one? println("frankl"||true)

A. TRUE

B. FALSE

C. The code doesn’t print anything

D. This code throws an error

Correct Answer is : This code throws an error

2. Select the output for the following line of code:println(40.getClass)

A. This causes a compilation error

B. This causes a runtime error

C. int

D. 40

Correct Answer is : int

3. What is a higher-order function in Scala?

A. It takes other functions as parameters

B. It returns a function as a result

C. Both of these

D. None of these

Correct Answer is : Both of these

4. Select the correct statements about the apply and unappl

A. apply lets us create an object from arguments

B. unapply lets us take an object apart

C. apply is like a constructor

D. All of the above

Correct Answer is : All of the above

5. Select the correct statements about Array and ArrayBuffer.

A. Arrays are immutable

B. An ArrayBuffer is of variable size

C. Arrays are similar to Java’s ArrayLists

D. ArrayBuffers are similar to Java’s arrays

Correct Answer is : An ArrayBuffer is of variable size

Scala interview questions