Tuples for grouped values in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a tuple named 'person' with a name and age.

Swift

let person = ("John", [1])

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

A30

B"John"

Cnil

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of a number for age.

Leaving the blank empty.

The tuple holds a name and an age. The age should be a number like 30.

2fill in blank

medium

Complete the code to access the first element of the tuple 'coordinates'.

Swift

let coordinates = (x: 10, y: 20)
let xValue = coordinates.[1]

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Ay

Bx

C0

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using the label 'y' instead of 'x'.

Using numeric indexes instead of labels.

To get the x value from the tuple, use the label 'x'.

3fill in blank

hard

Fix the error in the code by completing the tuple declaration correctly.

Swift

let result = (status: "OK", code: [1])

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Anil

B"200"

Ctrue

D200

Attempts:

3 left

💡 Hint

Common Mistakes

Putting 200 in quotes, making it a string.

Using a boolean or nil instead of a number.

The code expects an integer for 'code', so use 200 without quotes.

4fill in blank

hard

Fill both blanks to create a tuple with named elements and access the second element.

Swift

let point = ([1]: 5, [2]: 10)
let yValue = point.y

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Ax

Bz

Cy

Da

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong labels that don't match the access.

Mixing up the order of labels.

The tuple has labels 'x' and 'y'. We use 'y' to access the second element.

5fill in blank

hard

Fill all three blanks to create a tuple, access its elements, and print the name.

Swift

let person = ([1]: "Alice", [2]: 28)
let name = person.[3]
print(name)

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Aname

Bage

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong labels that don't match the tuple.

Accessing 'age' instead of 'name' when printing.

The tuple has labels 'name' and 'age'. We access 'name' to print it.