Scala Programming Free Test

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Scala

Scala

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Q1. Which of these is true for apply/unapply methods?
1. Apply lets us create objects from arguments
2. All of the above
3. Apply is like a constructor
4. None of the above
Q2. Complete the definition: A closure is function:
1. whose return value is decided by a variable declared outside of it.
2. that returns another argument as function.
3. that returns a Future.
4. that takes another argument as function.
Q3. What will be the output for: println(40.getClass) ?
1. This causes a compilation error
2. This causes a runtime error
3. 65
4. Int
Q4. Choose the incorrect way to make an executable Scala program.
1. Execute script file in the interpreter
2. None of the above
3. Compile objects with main method
4. Using an IDE
Q5. Which of these is/are paradigm of Scala programming?
1. Statistical type
2. Object oriented
3. All of the above
4. Functional
Q6. Which of these is not a Scala identifier?
1. String identifier
2. Literal identifier
3. Operative identifier
4. Alphanumeric identifier
Q7. Find the output of: println("frankl"||true))
1. This code doesn't exist
2. This code throws an error
3. 1
Q8. Define monad in Scala
1. A single parameter function
2. A single object
3. An object that wraps another object
4. All of the above
Q9. How to turn string "batmanstein" to string "man" in Scala?
1. None of the above
2. "batmanstein”.drop(3).capitalize.take(3)
3. "batmanstein”.drop(3).take(3).capitalize
4. All of the above
Q10. What does Scala stand for?
1. Scalable language
2. Scale language
3. Sequential language
4. Scalar language

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Programming Through Python

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