Switch with value binding in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to bind the value in the switch case.

Swift

let point = (3, 4)
switch point {
case (let [1], 4):
    print("x is \([1])")
default:
    break
}

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

Ax

By

Cvalue

Dz

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name that doesn't match the print statement.

Forgetting to use 'let' before the variable name.

The 'let x' binds the first element of the tuple to the variable x, which is then used in the print statement.

2fill in blank

medium

Complete the code to bind the associated value in the enum switch.

Swift

enum Result {
    case success(Int)
    case failure(String)
}

let result = Result.success(10)
switch result {
case .success(let [1]):
    print("Success with value \([1])")
case .failure(let message):
    print("Failure: \(message)")
}

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

Aerror

Bvalue

Cresult

Dnumber

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name that is not used in the print statement.

Not using 'let' to bind the associated value.

The 'let value' binds the associated Int value from the success case, which is then printed.

3fill in blank

hard

Fix the error in the switch statement by correctly binding the tuple values.

Swift

let coordinate = (x: 5, y: 0)
switch coordinate {
case ([1], 0):
    print("On the x-axis at \([1])")
default:
    print("Not on the x-axis")
}

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

Alet x

Bx

Clet y

Dy

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting 'let' before the variable name.

Using the wrong variable name that doesn't match the print statement.

Using 'let x' correctly binds the first element of the tuple to x, which is then used in the print statement.

4fill in blank

hard

Fill both blanks to bind the tuple values and print them.

Swift

let point = (2, 3)
switch point {
case ([1], [2]):
    print("x is \([1]), y is \([2])")
}

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

Alet x

Blet y

Cx

Dy

Attempts:

3 left

💡 Hint

Common Mistakes

Not using 'let' before variable names.

Using variable names that don't match the print statement.

Both 'let x' and 'let y' bind the tuple elements to variables x and y, which are then used in the print statement.

5fill in blank

hard

Fill all three blanks to bind values in the enum with associated values and print them.

Swift

enum Message {
    case text(String, Int)
    case image(String)
}

let message = Message.text("Hello", 5)
switch message {
case .text([1], [2]):
    print("Text: \([1]), count: \([2])")
case .image(let name):
    print("Image named \(name)")
}

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

Alet text

Blet count

Ccount

Dtext

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'let' inside the parentheses when it's not needed.

Mismatching variable names with the print statement.

The variables 'text' and 'count' are bound without 'let' inside the case pattern, and are used in the print statement.