Special Operators

Array Expression Operator

Returns the expression as an array.

@(Get-ChildItem $env:windir\System32\ntdll.dll)

Will return an array with one item

@(Get-ChildItem $env:windir\System32)

Will return an array with all the items in the folder (which is not a change of behavior from the inner expression.

Call Operation

$command = 'Get-ChildItem'
& $Command

Will execute Get-ChildItem

Dot sourcing operator

. .\myScript.ps1

runs .\myScript.ps1 in the current scope making any functions, and variable available in the current scope.