Task for launching concurrent work in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to launch a concurrent task that prints "Hello".

Swift

Task [1] {
    print("Hello")
}

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

Arun

Blaunch

Cstart

D()

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting the parentheses after Task

Using incorrect method names like run or start

The Task initializer requires parentheses () to start the concurrent work.

2fill in blank

medium

Complete the code to launch a task that returns an integer value.

Swift

let task = Task<Int, Never> [1] {
    return 42
}

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

A()

Bstart

Crun

Dlaunch

Attempts:

3 left

💡 Hint

Common Mistakes

Using method names instead of parentheses

Omitting the parentheses

The Task initializer requires parentheses () to start the concurrent work and capture the return value.

3fill in blank

hard

Fix the error in the code to correctly launch a task that prints "Done".

Swift

Task [1] {
    print("Done")
}

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

A()

Bstart()

Claunch()

Drun()

Attempts:

3 left

💡 Hint

Common Mistakes

Adding method calls after Task instead of parentheses

Leaving out parentheses entirely

The correct way to launch a task is to call Task() with empty parentheses, not with method calls like start().

4fill in blank

hard

Fill both blanks to create a task that returns the sum of two numbers.

Swift

let sumTask = Task<Int, Never> [1] {
    let a = 5
    let b = 7
    return a [2] b
}

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

A()

B-

C+

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using subtraction or multiplication instead of addition

Omitting parentheses after Task

The task is launched with empty parentheses (). To sum two numbers, use the plus operator +.

5fill in blank

hard

Fill all three blanks to create a task that returns the uppercase version of a string if its length is greater than 3.

Swift

let task = Task<String, Never> [1] {
    let word = "swift"
    if word.count [2] 3 {
        return word.[3]()
    } else {
        return word
    }
}

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

A()

B>

Cuppercased

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using less than operator instead of greater than

Forgetting parentheses after Task or method calls

The task is launched with parentheses (). The condition checks if the length is greater than 3 using >. To convert to uppercase, use the uppercased() method.