Tutorial by Examples

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.

$command = 'Get-ChildItem' & $Command Will execute Get-ChildItem

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