Data class copy and destructuring in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a copy of the data class instance with a new age.

Kotlin

val person2 = person.[1](age = 30)

Drag options to blanks, or click blank then click option'

Aclone

Bcopy

Cduplicate

DcopyOf

Attempts:

3 left

💡 Hint

Common Mistakes

Using clone() which is not available for Kotlin data classes.

Trying to use copyOf() which is not a data class function.

The copy() function is used to create a copy of a data class instance with some properties changed.

2fill in blank

medium

Complete the code to destructure the data class into variables.

Kotlin

val (name, [1]) = person

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Aage

Bweight

Cheight

Daddress

Attempts:

3 left

💡 Hint

Common Mistakes

Using a property name not declared in the data class.

Mixing up the order of properties.

Data classes automatically provide componentN() functions for destructuring. The second property is 'age'.

3fill in blank

hard

Fix the error in the copy function call to change the name.

Kotlin

val person3 = person.[1](name = "Alice")

Drag options to blanks, or click blank then click option'

Acopy

Bduplicate

Cclone

DcopyOf

Attempts:

3 left

💡 Hint

Common Mistakes

Using clone() or copyOf() which are not valid for data classes.

Misspelling the function name.

The correct function to copy a data class with modifications is copy().

4fill in blank

hard

Fill both blanks to destructure the data class and print the values.

Kotlin

val ([1], [2]) = person
println("Name: $[1], Age: $[2]")

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Aname

Bage

Cheight

Dweight

Attempts:

3 left

💡 Hint

Common Mistakes

Using properties not declared in the data class.

Mixing up the order of variables.

The first and second properties of the data class are 'name' and 'age', used for destructuring.

5fill in blank

hard

Fill all three blanks to copy the data class with a new name, destructure it, and print the values.

Kotlin

val person4 = person.[1](name = "Bob")
val ([2], [3]) = person4
println("Name: $[2], Age: $[3]")

Drag options to blanks, or click blank then click option'

Acopy

Bname

Cage

Dclone

Attempts:

3 left

💡 Hint

Common Mistakes

Using clone() instead of copy().

Mixing up variable names in destructuring.

Use copy() to create a new instance with a changed name, then destructure into name and age variables.