You have an object array $arr containing mixed types: strings, numbers, and booleans. How can you create a new array containing only the string elements?

hard📝 Application Q8 of 15

PowerShell - Working with Objects

A$arr | Where-Object { $_ -like '*string*' }

B$arr | Where-Object { $_ -eq 'string' }

C$arr | Where-Object { $_.GetType() -eq 'string' }

D$arr | Where-Object { $_ -is [string] }

Step-by-Step Solution

Solution:

Step 1: Filter array by type
Use Where-Object with -is operator to check if element is string type.
Step 2: Evaluate options
$arr | Where-Object { $_ -is [string] } correctly filters strings. Others compare values or types incorrectly.
Final Answer:
$arr | Where-Object { $_ -is [string] } -> Option D
Quick Check:
Use -is to filter by type = D [OK]

Quick Trick: Use -is operator to filter by object type [OK]

Common Mistakes:

Using -eq to compare type as string
Using GetType() without proper comparison
Using -like which matches strings, not types

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You have an object array $arr containing mixed types: strings, numbers, and booleans. How can you create a new array containing only the string elements?

Step 1: Filter array by type

Step 2: Evaluate options

Final Answer:

Quick Check:

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