Value receivers in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a method with a value receiver.

Go

type Counter struct {
    count int
}

func (c Counter) Increment() {
    c.count++
}

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

A*

BCounter

Cc

D&

Attempts:

3 left

💡 Hint

Common Mistakes

Using * or & as the receiver variable name.

Using the type name instead of a variable name.

The method receiver must be a variable name, here c is the value receiver variable.

2fill in blank

medium

Complete the code to call the Increment method on a value receiver.

Go

c := Counter{count: 0}
c.[1]()
fmt.Println(c.count)

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

AincrementCount

BIncrement

CAdd

Dincrement

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase method names that do not exist.

Calling a method that is not defined.

The method name is Increment with uppercase I to export it.

3fill in blank

hard

Fix the error in the method receiver declaration.

Go

func (c *Counter) Increment() {
    c.count++
}

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

ACounter

B&c

C*c

Dc

Attempts:

3 left

💡 Hint

Common Mistakes

Using the type name as the receiver variable.

Using pointer dereference syntax in the receiver variable.

The receiver variable must be a name like c, not a type or pointer dereference.

4fill in blank

hard

Fill both blanks to define a method with a value receiver and print the count.

Go

func (c Counter) PrintCount() {
    fmt.Println(c.count)
}

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

Ac

BCounter

Ccount

D*Counter

Attempts:

3 left

💡 Hint

Common Mistakes

Using pointer type for value receiver.

Using wrong variable names.

The receiver variable is c and the type is Counter for a value receiver.

5fill in blank

hard

Fill all three blanks to create a value receiver method that increments count and prints it.

Go

func (c Counter) IncrementAndPrint() {
    c.count++
    fmt.Println(c.count)
}

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

Ac

BCounter

Ccount

D*Counter

Attempts:

3 left

💡 Hint

Common Mistakes

Using pointer type for value receiver.

Using wrong field name.

Using wrong variable name.

The receiver variable is c, the type is Counter, and the field accessed is count.