Essential Books

Filtering Where-Object where

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Filter an enumeration by using a conditional expression

Synonyms: 

Where-Object
where
?

Example: 

$names = @( "Aaron", "Albert", "Alphonse","Bernie", "Charlie", "Danny", "Ernie", "Frank")

$names | Where-Object { $_ -like "A*" }
$names | where { $_ -like "A*" }
$names | ? { $_ -like "A*" }

Returns:

Aaron

Albert

Alphonse

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Basic set operations:
* Basic Set Operations
* Filtering Where-Object where
* Ordering Sort-Object sort
* Grouping Group-Object group
* Projecting Select-Object select
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