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What happens if you group objects by a property that contains null or empty values using Group-Object?

hard📝 Conceptual Q10 of 15
PowerShell - Working with Objects
What happens if you group objects by a property that contains null or empty values using Group-Object?
AObjects with null or empty values cause an error
BAll objects with null or empty values are grouped together under a group with an empty Name
CObjects with null or empty values are excluded from the output
DEach object with null or empty value forms its own separate group
Step-by-Step Solution
Solution:

  1. Step 1: Understand grouping behavior with null/empty

    Group-Object groups all objects with null or empty property values together.

  2. Step 2: Check output group Name for null/empty

    The group Name property is empty string for such groups.

  3. Final Answer:

    All objects with null or empty values are grouped together under a group with an empty Name -> Option B

  4. Quick Check:

    Null/empty values grouped together with empty Name [OK]
Quick Trick: Null or empty values group together with empty Name [OK]
Common Mistakes:
  • Expecting error on null values
  • Assuming exclusion of nulls
  • Thinking each null is separate group

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