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)?

Un-Answered Questions { Scala }

What do you mean by implicit parameters?

Like Java’s java.lang.Object class, what is the super class of all classes in Scala?

How do I append data in a list?

Write a few frameworks of scala?

What is traversable in scala collection?

How does yield work in scala?

Why is scala good for big data?

What are the differences between Array and ArrayBuffer in Scala?

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

What is final in scala?

Explain the difference between val and var in scala?

What is the access modifier in scala?

What is the difference between 'val' and 'lazy val' in Scala? What is Eager Evaluation? What is Lazy Evaluation?

How is the scala code compiled?

What is the difference between Function and Method in Scala?

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