CODEWITHSUNDEEP
powershelllist-comprehension
Grant Curell
Grant Curell

Reputation: 1763

PowerShell - Search a list of HashTables and filter them based on a key

In Python you can do something like a list comprehension with a filter function to work through a list of dictionaries and find the ones you want:

warranty_info = [warranty for warranty in warranty_info if
                                 args.warranty_keyword.lower() in warranty['ServiceLevelDescription'].lower()]

where warranty_info is a list of dictionaries and ServiceLevelDescription is a field on which I want to filter. The result is a new list of dictionaries with only those that I want. In this case I am looking for all the dictionaries who have a user provided word (warranty_keyword) in their ServiceLevelDescription field.

I know how to accomplish this in PowerShell using a foreach loop - is there a "cleaner" way to do it like Python has?

Upvotes: 1

Views: 476

Answers (1)

Grant Curell
Grant Curell

Reputation: 1763

I figured it out - it's actually even more elegant than Python (Grant's opinion):

$WarrantyInfo | Where-Object 'ServiceLevelDescription' -Match ^*pro*

The syntax has a lot that's implied. This will search the list of HashTables and for each one extract the key ServiceLevelDescription - afterwards it will check if there is a match to whatever you put after the -Match switch.

Upvotes: 2

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