ways to unroll a nested array

unroll.ps1

$toUnroll = @(@(0,1),@(2,3),@(@(4,@(5,6)),@(7,8),9),10)

# With a Queue, unordered unrolling
function QueueUnroll {
[cmdletbinding()]
param(
    [parameter(Mandatory, ValueFromPipeline)]
    [object[]]$Unroll
)

    process {
        $queue = [System.Collections.Queue]::new()
        $queue.Enqueue($Unroll)
        while($queue.Count) {
            foreach($item in $queue.Dequeue()) {
                if($item -is [object[]]) {
                    $queue.Enqueue($item)
                    continue
                }
                $item
            }
        }
    }
}
QueueUnroll -Unroll $toUnroll

# With a Recursive Function, ordered unrolling
function RecursiveUnroll {
param(
    [parameter(Mandatory, ValueFromPipeline)]
    [object[]]$Unroll
)

    process {
        foreach($item in $Unroll) {
            if($item -is [object[]]) {
                RecursiveUnroll -Unroll $item
                continue
            }
            $item
        }
    }
}
RecursiveUnroll -Unroll $toUnroll

# With a Recursive Method, ordered unrolling
class Unroller {
    [object[]]$Array

    Unroller() { }
    Unroller([object[]]$Array) {
        $this.Array = $Array
    }
    static [object] Unroll([object[]]$Array) {
        $result = foreach($item in $Array) {
            if($item -is [object[]]) {
                [Unroller]::Unroll($item)
                continue
            }
            $item
        }
        return $result
    }
    [object] Unroll () {
        return [Unroller]::Unroll($this.Array)
    }
}
$class = [Unroller]$toUnroll
$class.Unroll()