Scala 면접 질문과 답변
Ques 16. What is the purpose of 'scalatest' in Scala?
'scalatest' is a popular testing framework for Scala. It provides a rich set of features for writing and executing tests, including support for behavior-driven development (BDD) and various testing styles.
Ques 17. Explain the 'yield' keyword in the context of Scala futures.
In the context of Scala futures, 'yield' is used within a 'for' comprehension to produce a value that will be included in the future's result. It is often used for combining and transforming asynchronous computations.
Ques 18. What is the purpose of the 'implicit class' feature in Scala?
The 'implicit class' feature in Scala allows developers to add new methods to existing classes without modifying their source code. It is often used to extend functionality in a clean and concise manner.
Ques 19. Explain the 'partition' method in Scala collections.
The 'partition' method in Scala collections divides a collection into two parts based on a predicate. Elements that satisfy the predicate are placed in one part, while the rest go into the other part.
Ques 20. What is the purpose of the 'unapply' method in Scala?
The 'unapply' method is used in the context of pattern matching. It allows you to extract values from objects, making it a key component in creating custom extractors for pattern matching.
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