Suspend functions concept in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a suspend function named fetchData.

Kotlin

suspend fun [1]() {
    // simulate fetching data
}

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

AfetchData

BretrieveData

CloadData

DgetData

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name than requested.

The function name must be fetchData as requested.

2fill in blank

medium

Complete the code to call the suspend function fetchData inside a coroutine scope.

Kotlin

import kotlinx.coroutines.*

fun main() = runBlocking {
    [1]()
}

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

Alaunch

Basync

CfetchData

Ddelay

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to launch or async instead of calling the function directly.

You need to call the suspend function fetchData() inside runBlocking.

3fill in blank

hard

Fix the error in the suspend function declaration by filling the blank.

Kotlin

fun [1] fetchData() {
    // code
}

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

Asuspend

Basync

Claunch

Dcoroutine

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'async' or 'launch' as function modifiers instead of 'suspend'.

The keyword suspend is required before the function name to declare a suspend function.

4fill in blank

hard

Fill both blanks to create a suspend function that delays for 1000 milliseconds and then prints a message.

Kotlin

suspend fun waitAndPrint() {
    [1](1000L)
    println([2])
}

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

Adelay

B"Done waiting!"

C"Waiting finished"

Dprint

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'print' instead of 'println', or wrong string message.

The delay function pauses the coroutine, and then the message "Done waiting!" is printed.

5fill in blank

hard

Fill all three blanks to create a suspend function that fetches data, delays, and returns a string result.

Kotlin

suspend fun fetchData(): String {
    val data = "Data"
    [1](500L)
    return [2] + [3]
}

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

Adelay

Bdata

C" fetched"

D"done"

Attempts:

3 left

💡 Hint

Common Mistakes

Returning wrong strings or forgetting to delay.

The function delays for 500 milliseconds, then returns the string data + " fetched".