Pointer receivers in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

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

Go

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

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APerson

Bperson

C&Person

D*Person

Attempts:

3 left

💡 Hint

Common Mistakes

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

The method receiver must be a pointer to modify the original struct. Using *Person allows changes to affect the original instance.

2fill in blank

medium

Complete the code to call the method with a pointer receiver correctly.

Go

p := Person{Name: "Alice"}
p.[1]("Bob")

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Asetname

BSetName

CsetName

DSetname

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect capitalization for the method name.

Method names in Go are case-sensitive and usually start with a capital letter if exported. The method defined is SetName.

3fill in blank

hard

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

Go

func (p [1] Person) UpdateAge(age int) {
    p.Age = age
}

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A*Person

BPerson

C&Person

Dperson

Attempts:

3 left

💡 Hint

Common Mistakes

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

To modify the original struct, the receiver must be a pointer type *Person. Using a value receiver copies the struct and changes won't persist.

4fill in blank

hard

Fill both blanks to create a pointer receiver method that increments Age by 1.

Go

func (p [1] Person) [2]() {
    p.Age++
}

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A*Person

BPerson

CIncrementAge

DincrementAge

Attempts:

3 left

💡 Hint

Common Mistakes

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

Using lowercase method name which may not be exported.

The receiver must be a pointer *Person to modify the original struct. The method name IncrementAge follows Go naming conventions with capital letter.

5fill in blank

hard

Fill all three blanks to define a pointer receiver method that resets Name and Age.

Go

func (p [1] Person) [2]() {
    p.Name = [3]
    p.Age = 0
}

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A*Person

BReset

C""

DPerson

Attempts:

3 left

💡 Hint

Common Mistakes

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

Forgetting to reset Name to an empty string.

The receiver must be a pointer *Person to modify the original struct. The method name Reset is capitalized. The empty string "" resets the Name field.