How to create an empty array named by variable and use it only by referring to it thru the variable name?

Question

How to create an empty array named by variable and use it only by referring to it thru the variable name?

e.g. array named empty

$empty = @()

$empty -is [array]
True

versus:

$arrayname='empty'
${$arrayname}=@()

$empty -is [array]
False

AND

$empty+='hello'

versus

${$arrayname}+='hello'

Answer 1

maybe you want this:

$arrayname='empty'

$empty -is [array]
False

Invoke-Expression  "`$$arrayname = @()"

$empty -is [array]
True

Answer 2

I would rather use a PSObject

$empty = New-Object PSObject -property @{
    ArrayName = "String"
    ArrayValue = @()
} 
$empty.pstypenames.Insert(0,"SuperArray")
// Here you add the generic function to manipulate your array
$empty | Add-Member ScriptProperty Add {$this.ArrayValue} { $this.ArrayValue = $args}

The data structure may be optimized to better fit your requirement.