When PowerShell hash table magic backfires

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When PowerShell hash table magic backfires(tellingmachine.com)

submitted by Klaus(755) 3 years, 4 months ago

We just made it through the holidays and I finally found time to write about the most annoying thing in PowerShell: Hash table semi-automatic, which can easily result in some subtle bugs. And all of that, just because the hash tables don't behave as I would expect. I assumed hash tables to be implicitly sorted by the keys using the Sort-Object cmdlet and to always stay hash tables and not get converted into arrays of Dictionary Entries or even a single Dictionary entry when piped into a Where-Object cmdlet. To workaround these strange defects you need to apply some unnatural constructs and roll your own select statements. It just doesn't feel fair to make your children call GetEnumerator() before they try to find today's window on their Advents Calendar.

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