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 language is scala written in?

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?

Explain the main difference between List and Stream in Scala Collection API? How do we prove that difference? When do we choose Stream?

Is scala worth learning?

List different types of literals available in scala?

What is the utilization of tuples in scala?

What is the queue in the scala collection?

What is Case Classes?

If I want to become a Fullstack Scala Developer, which technology stack I should learn?

Explain the difference between java and scala?

Mention the difference between an object and a class ?

What is scala closure?

What is PreDef in Scala?

What is the difference between Java’s 'If..Else' and Scala’s 'If..Else'?

What is lambda expression in scala?

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