Public/New-ArrayList.ps1
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function New-ArrayList { <# .SYNOPSIS Create a new array to append objects into. .DESCRIPTION By default, constructs an empty [System.Collections.ArrayList] collection. When specifying -Type, constructs an empty [System.Collections.Generic.List<T>] collection. Capture New-ArrayList in a variable to reuse it with Add-ArrayObject. .EXAMPLE $a = New-ArrayList Create $a as an empty ArrayList, to use later with Add-ArrayObject. .EXAMPLE $a = New-ArrayList -Type PSCustomObject Create $a as an empty Generic.List collection. This list is "type-safe," meaning it will append only objects of type PSCustomObject, rejecting others. .OUTPUTS [System.Collections.ArrayList] [System.Collections.Generic.List<T>] .NOTES https://stackoverflow.com/questions/2309694/arraylist-vs-list-in-c-sharp https://serverfault.com/questions/708832/how-to-cast-as-arraylist-preset-data-in-param-block-and-return-as-arraylist https://connect.microsoft.com/PowerShell/feedback/details/1622532 .LINK https://github.com/brianbunke/ArrayList #> [CmdletBinding()] param ( # Optionally specify the only object type that the new list will accept. # This will construct a Generic.List collection, instead of the default ArrayList. # -Type expects a string ("int") instead of a type notation ([int]). [string]$Type ) If ($Type) { New-Object System.Collections.Generic.List[$Type] } Else { New-Object System.Collections.ArrayList } } |