Scala Interview Questions
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What is object in Scala? Is it a singleton object or instance of a class?

7

What is the main design decision about two separate keywords: class and object in Scala? How do we define Instance members and Static members in Scala?

7

How many values of type Unit have in Scala?

7

What is the use of ‘yield’ keyword in Scala’s for-comprehension construct?

7

What is call-by-name? Does Scala and Java support call-by-name? What is the difference between call-by-value and call-by-name function parameters?

7

Which IDEs support Play and Scala-Based Applications Development and how?

7

What is an Higher-Order Function (HOF)?

7

What are the differences between Case class and Normal Class?

7

What is a Companion Object in Scala? What is a Companion Class in Scala? What is the use of Companion Object in Scala?

7

When compare to Normal Class, What are the major advantages or benefits of a Case-class?

7

What are the Scala Features?

7

What is 'Type Inference' in Scala?

7

What is Unit in Scala? What is the difference between Java’s void and Scala’s Unit?

7

How Scala solves Inheritance Diamond Problem automatically and easily than Java 8?

7

What is ‘scala trait’ in scala?

7


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Un-Answered Questions { Scala }

What is the use of ‘???’ in Scala-based Applications?

7


Differentiate nil, null, none, and nothing in scala.

1


What is scala map function?

1


What do you mean by implicit parameters?

1


What do you mean by option in scala and why it is used?

1






Difference between Scala’s Inner class and Java’s Inner class?

7


What is the latest version of scala?

1


Give some examples of packages in scala?

1


What is scala option?

1


What is the difference between Function and Method in Scala?

7


What is finally in scala?

1


Explain the main drawback of scala language?

1


Explain any five string methods?

1


What is function composition in scala?

1


How many values of type Nothing have in Scala?

7