Madanswer Technologies Interview Questions Data|Agile|DevOPs|Python - Recent questions in Scala - The Diatonic Syallable

What term is used to specify a precondition?

Sat, 13 Aug 2022 15:50:18 +0000

What term is used to specify a precondition?

a. assert

b. require

c. precondition

d. mustHave

What is the value of z after executing this code? val y = List('a','b') val z = y::List('c')

Sat, 13 Aug 2022 15:49:07 +0000

What is the value of z after executing this code?

val y = List('a','b')

val z = y::List('c')

a. List(a,b,c)

b. List(List(a, b), c)

c. List(c,a,b)

d. List(c,List(a,b))

Which is a subclass of all classes?

Sat, 13 Aug 2022 15:44:27 +0000

Which is a subclass of all classes?

a. AnyVal

b. AnyRef

c. Method

d. Null

What type of object does this code create? val x = (1234, "Active")

Sat, 13 Aug 2022 15:43:03 +0000

What type of object does this code create?

val x = (1234, "Active")

a. List

b. Map

c. Tuple

d. Array

When you convert a map to a list using the toList method of the map, the result will be of which type?

Sat, 13 Aug 2022 15:41:43 +0000

When you convert a map to a list using the toList method of the map, the result will be of which type?

a. List[(String, String)]

b. List[(Array, Array)]

c. List[(Collection, Collection)]

d. List

What type of number is 1234.e5?

Sat, 13 Aug 2022 15:40:31 +0000

What type of number is 1234.e5?

a. hexadecimal

b. short

c. floating point

d. long

After defining a function in the interpreter, Scala returns the following. What does the () indicate? myfnc: ()Unit

Sat, 13 Aug 2022 15:39:21 +0000

After defining a function in the interpreter, Scala returns the following. What does the () indicate?

myfnc: ()Unit

a. The function has no side effects.

b. The function takes no parameters.

c. The function returns no value.

d. Returning unit types to the function is a closures.

What data type would you use to store an immutable collection of objects that contain a fixed number of varying types?

Sat, 13 Aug 2022 15:37:36 +0000

What data type would you use to store an immutable collection of objects that contain a fixed number of varying types?

a. Array

b. ImmutableCollection

c. List

d. Tuple

What do you use in ScalaTest to see a detailed diagram of error messages when a test fails?

Sat, 13 Aug 2022 15:36:40 +0000

What do you use in ScalaTest to see a detailed diagram of error messages when a test fails?

a. ArgumentExceptions

b. AssertionException

c. DiagrammedAssertions

d. JUnit

What is one way to avoid low-level parallelization details?

Sat, 13 Aug 2022 15:32:59 +0000

What is one way to avoid low-level parallelization details?

a. monads

b. literal functions

c. partially applied functions

d. parallel collections

What value does this code return?

Sat, 13 Aug 2022 15:31:56 +0000

What value does this code return?

val m1 = Map("a"->1,"b"->2,"c"->3)

m1("a")

a. a

b. 2

c. b

d. 1

Scala bytecode can run on top of Java VM. What is the fundamental difference between Java object.clone() and Scala object.copy()?

Sat, 13 Aug 2022 15:30:38 +0000

Scala bytecode can run on top of Java VM. What is the fundamental difference between Java object.clone() and Scala object.copy()?

a. One is a Java object, the other is a Scala object.

b. clone() will copy class structures but not the data, while copy() will also copy data into new objects.

c. There is no difference.

d. copy() allows you to change values during the copying process; clone() does not.