PowerShell array count not zero

Question

I'm trying to understand why this array count is not resulting in 0

@($null).Count

Output:

Because that's an array with one item in it ($null). It's not empty. @().Count returns zero. — Bill_Stewart
– Bill_Stewart, Commented Jul 6, 2017 at 14:05
@Bill_Stewart Nice. Please consider putting in an answer so we can get it out of the unanswered queue, and upvote etc. — G42
– G42, Commented Jul 6, 2017 at 14:20

Bill_Stewart · Accepted Answer · 2017-07-06 15:19:24Z

9

@($null) is an array with a single $null element (hence the Count property is 1). Likewise @($null,$null).Count is 2, and @().Count is 0. Keep in mind that @($null) emits $null to the pipeline, so the Count property returned from @($null) | Measure-Object will be 0.

edited Jul 6, 2017 at 15:19

answered Jul 6, 2017 at 14:24

Bill_Stewart

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