Functions returning tuples in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a function that returns a tuple with two integers.

Swift

func getCoordinates() -> [1] {
    return (10, 20)
}

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A(Int, Int)

BString

CInt

DVoid

Attempts:

3 left

💡 Hint

Common Mistakes

Using just Int as return type instead of a tuple.

Using String as return type when the function returns numbers.

The function returns a tuple of two integers, so the return type must be (Int, Int).

2fill in blank

medium

Complete the code to call the function and store the returned tuple.

Swift

let position: [1] = getCoordinates()

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A(Int, Int)

BInt

CString

DDouble

Attempts:

3 left

💡 Hint

Common Mistakes

Using Int instead of a tuple type for the variable.

Using String or Double which do not match the tuple.

The variable position must have the same tuple type as the function's return type, which is (Int, Int).

3fill in blank

hard

Fix the error in the function return type to correctly return a tuple with named elements.

Swift

func getUser() -> [1] {
    return (name: "Alice", age: 30)
}

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A(String, Int)

B(name: String, age: Int)

CString

DInt

Attempts:

3 left

💡 Hint

Common Mistakes

Using unnamed tuple type (String, Int) when names are present.

Using just String or Int as return type.

The function returns a tuple with named elements, so the return type must include the names: (name: String, age: Int).

4fill in blank

hard

Fill both blanks to extract the tuple elements into variables.

Swift

let user = getUser()
let [1] = user.name
let [2] = user.age

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AuserName

BuserAge

Cname

Dage

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same names as tuple elements which can cause confusion.

Using unrelated variable names.

We create new variables userName and userAge to hold the tuple's name and age values.

5fill in blank

hard

Fill all three blanks to define a function returning a tuple and call it correctly.

Swift

func [1]() -> (x: Int, y: Int) {
    return (x: 5, y: 10)
}

let point = [2]()
print("x is \(point.[3])")

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AmakePoint

Cx

Dy

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatching function name and call.

Accessing the wrong tuple element.

The function is named makePoint, called as makePoint(), and the tuple element x is accessed to print its value.