PowerShell: How can I to force to get a result as an Array instead of Object

Question

$result = Get-ADUser -Filter $filter

If I have 2 or more results, I get $x as array, but if I have only one result, a get $x as object. How to make

Answer 1

By the way, the other solutions in this question are not really the best way to do this, for the reasons stated in their comments. A better way is simply to put a comma before the function, like

$result = ,(Get-ADUser -Filter $filter)

That will put an empty result into an empty array, a 1 element result into a 1 element array and a 2+ element result into an array of equal elements.