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

Scala Interview Questions

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How does it work under-the-hood, when we create an instance of a Class without using ‘new’ keyword in Scala? When do we go for this approach?

How many values of type Nothing have in Scala?

In FP, What is the difference between a function and a procedure?

What is the default Unit and Functional Testing Framework for Play? What is the default Build Tool for Play? What is the Default Template Engine for Play? What is the built-in Web Server available in Play Framework?

What are the major differences between Scala’s Auxiliary constructors and Java’s constructors?

What is the best Code-coverage tool available for Play and Scala based applications?

What is guard in Scala’s for-comprehension construct?

Does a Companion object access private members of it’s Companion class in Scala?

What is the best Scala style checker tool available for Play and Scala based applications?

What is an Anonymous Function In Scala? What is a Function Literal in Scala? What are the advantages of a Anonymous Function/Function Literal in Scala?

What are the advantages of Play/Scala stack to develop web applications?

How do we declare a private Primary Constructor in Scala? How do we make a call to a private Primary Constructor in Scala?

What is Range in Scala? How to create a Range in Scala?

How to implement interfaces 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?

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Un-Answered Questions { Scala }

Please explain closure is scala?

How many public class files are possible to define in Scala source file?

How many operators are there in Scala and Why?

What is lazy val in scala?

In what ways Scala is better than other programming language?

What is an Anonymous Function In Scala? What is a Function Literal in Scala? What are the advantages of a Anonymous Function/Function Literal in Scala?

Mention how scala is different from java?

What square measure the Scala variables?

What are the differences between Array and ArrayBuffer in Scala?

Write a few frameworks of scala?

What is the queue in the scala collection?

What is SBT? What is the best Build Tool to develop Play and Scala Applications?

What do you mean by trait in scala and when it is used?

Explain either/left/right design pattern in scala?

What is flatmap in scala?

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