Object arrays in PowerShell - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create an array of objects with a single property 'Name'.

PowerShell

$array = @(@{Name='Alice'}, @{Name='Bob'}, @{Name='Charlie'})
$array | ForEach-Object { $_.[1] }

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

AObject

BValue

CName

DItem

Attempts:

3 left

💡 Hint

Common Mistakes

Using $_.Value or $_.Object which do not exist in the objects.

Trying to access the array directly without looping.

The property 'Name' is accessed using $_.Name to get each object's Name value.

2fill in blank

medium

Complete the code to add a new object with Name 'David' to the existing array.

PowerShell

$array += [1]

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

A@{Name='David'}

B@{Value='David'}

C@{Object='David'}

D@{Item='David'}

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong property names like 'Value' or 'Object'.

Not using a hashtable syntax.

To add a new object with property 'Name', use @{Name='David'}.

3fill in blank

hard

Fix the error in the code to filter objects where Name starts with 'A'.

PowerShell

$filtered = $array | Where-Object { $_.Name [1] '^A' }

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

A-contains

B-match

C-like

D-eq

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-eq' which checks exact equality.

Using '-like' without wildcards.

Using '-contains' which is for collections.

The operator '-match' is used to match a regex pattern like '^A'.

4fill in blank

hard

Fill both blanks to create an array of objects with Name and Age properties.

PowerShell

$people = @(@{Name='Eve'; [1]=30}, @{Name='Frank'; [2]=25})

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

AAge

BValue

CYears

DCount

Attempts:

3 left

💡 Hint

Common Mistakes

Using different property names like 'Value' or 'Years' inconsistently.

Using property names that do not match.

The property for age is 'Age' in both objects.

5fill in blank

hard

Fill all three blanks to create a filtered array of people older than 28 with their names in uppercase.

PowerShell

$result = $people | Where-Object { $_.[1] [2] 28 } | ForEach-Object { $_.[3].ToUpper() }

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

AAge

B>

CName

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong property names or operators.

Trying to uppercase the Age property.

Filter by Age > 28 and convert the Name property to uppercase.