Why does using an ArrayList prints numbers?

powershell arraylist

The ArrayList.Add method always returns the index of the new item that you add:

PS > $ArrayList = New-Object System.Collections.ArrayListPS > $ArrayList.Add('a')0PS > $ArrayList.Add('b')1PS >

You can suppress this output by either casting to [void]:

PS > $ArrayList = New-Object System.Collections.ArrayListPS > [void]$ArrayList.Add('a')PS >

or by redirecting the output to $null:

PS > $ArrayList = New-Object System.Collections.ArrayListPS > $ArrayList.Add('a') > $nullPS >

powershell arraylist

ArrayList.Add() returns the index at which the value was added. Get rid of this output by redirecting to $null or casting to [void].

$ArrayList.Add($subString) > $null

[void]$ArrayList.Add($subString)

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