Scala Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Scala Interview Questions

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When can you use traits?

How do we make a call to a private primary constructor in scala?

What are the advantages of case class?

What are the advantages of a anonymous function/function literal in scala?

What is the difference between :: and #:: in scala?

What are left and right in scala?

What is the difference between call-by-value and call-by-name function parameters?

What is the current latest version of scala? What is the major change or update in scala 2.12?

What is option/some/none design pattern in scala?

What is the difference between apply and unapply methods in scala?

Explain either/left/right design pattern in scala?

What is case object?

Compare to java what are the major advantages or benefits of scala?

What is unapply method in scala?

What are the advantages of scala over java (java 8)?

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Un-Answered Questions { Scala }

What are the available Unit Testing, Functional Testing and/or BDD Frameworks for Play and Scala Based applications?

How do we implement loops functionally? What is the difference between OOP and FP style loops?

What is REPL in Scala? What is the use of Scala’s REPL? How to access Scala REPL from CMD Prompt?

Is scala easy to learn?

What is scala option?

Explain the main drawback of scala language?

Explain the scala anonymous function.

Mention the difference between an object and a class ?

Explain different types of identifiers in scala?

What is a collection in scala?

Why Scala is better than Java? What are the advantages of Scala over Java (Java 8)? Compare to Java What are the major advantages or benefits of Scala?

What is Diamond Problem? How Scala solves Diamond Problem?

What is the function parameter with a default value in scala?

Is scala an oop?

Is scala good for machine learning?

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