Why methods are used in Go - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a method for the struct.

Go

func (p *Person) [1]() string {
    return p.name
}

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

APerson

Bname

Cfunc

DGetName

Attempts:

3 left

💡 Hint

Common Mistakes

Using the struct name instead of a method name.

Using 'func' as the method name.

The method name should be GetName to define a method that returns the name.

2fill in blank

medium

Complete the code to call the method on the struct instance.

Go

p := Person{name: "Alice"}
fmt.Println(p.[1]())

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

Aname

BPerson

CGetName

Dfunc

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to access the field directly instead of calling the method.

Using the struct name as a method call.

To call the method that returns the name, use GetName.

3fill in blank

hard

Fix the error in the method receiver to allow modifying the struct.

Go

func (p [1] Person) SetName(newName string) {
    p.name = newName
}

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

A*

B&

Cvalue

Dref

Attempts:

3 left

💡 Hint

Common Mistakes

Using a value receiver which does not modify the original struct.

Using incorrect symbols like & or ref.

Using a pointer receiver *Person allows the method to modify the original struct.

4fill in blank

hard

Fill both blanks to create a method that returns the full name.

Go

func (p [1] Person) FullName() string {
    return p.firstName + [2] + p.lastName
}

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

A*

B+

C-

D&

Attempts:

3 left

💡 Hint

Common Mistakes

Using a value receiver that may copy the struct.

Using minus or ampersand instead of plus for string concatenation.

The pointer receiver *Person allows access to the struct, and + concatenates strings.

5fill in blank

hard

Fill all three blanks to define and call a method that updates and returns the age.

Go

func (p [1] Person) SetAge(newAge int) {
    p.age = newAge
}

func (p Person) GetAge() int {
    return p.[2]
}

p := Person{}
p.[3](30)
fmt.Println(p.GetAge())

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

A*

Bage

CSetAge

DGetAge

Attempts:

3 left

💡 Hint

Common Mistakes

Using value receiver in SetAge which does not update the original struct.

Returning wrong field name.

Calling the wrong method to set age.

Use a pointer receiver *Person in SetAge to modify the struct. The field age is returned by GetAge. Call SetAge to update the age.