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Scala MCQ
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- 17th Apr, 2021
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Scala MCQ
Following are mostly asked Scala MCQ test that are designed for professionals like you to crack you interviews. You can take this Scala online test before appearing to you real interview. This Scala quiz there are around 30+ multiple choice questions on Scala with four options.
1) What is a type class in Scala?
2) Which of the following statements are true about iterators?
3) What is Scala?
4) What is a monad in Scala?
5) Scala is a general-purpose programming language that provids support for both object-oriented programming and functional programming.
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6) Scala is an acronym for “Scalable Language”.
7) Is Scala a pure object-oriented language?
8) What is the advantage of Scala?
9) A FUNCTOR must have ___.
10) What does the following code do with var countries=List("brazil", "argentina", "colombia")? println{ countries.reduceLeft[String]{(c1: String, c2: String)=> s"$c1, $c2" } }
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11) In Scala, apply() serves the purpose of closing the gap between Object-Oriented and Functional paradigms.
12) The ___ method is utilized to select an element in the list by its index.
13) Without an explicit import, maps in Scala are by default:
14) What is Scala’s programming paradigm?
15) Omitting a semicolon(;) at the end of a statement causes the compiler to throw an error.
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16) Is UNIT a data type in Scala?
17) Which of the following not shows how to declare variables of the basic numeric types?
18) A list is a collection which contains ___ data.
19) Which one of the following is a feature of Scala strings?
20) How can you format a string?
21) Scala is designed by _______.
22) Scala runs on the _____ platform.
23) _____ is a Scala compiler that compiles to JavaScript.
24) _____ is a Scala compiler that compiles to JavaScript.
25) Scala has singleton objects, which are essentially classes with only one instance.
26) Scala was released in the year ______.
27) Which among the following is a Scala Web Frameworks?
28) We can execute a Scala program in ______ modes.
29) The ‘scalac’ command is used to compile the Scala program and it will generate a few class files in the current directory.
30) The null value is of type _______.
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