Private/New-ReadOnlyCollection.ps1
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function New-ReadOnlyCollection { [CmdletBinding()][Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseShouldProcessForStateChangingFunctions", "", Justification = "Not changing state")] param ( [Parameter(Position = 0, Mandatory = $true)] [ValidateNotNullOrEmpty()][Alias('list')] [Object[]]$array ) process { if ($array.Count -eq 0) { throw [System.InvalidOperationException]::new("New-ReadOnlyCollection : NullOrEmpty InputObject, WTF man?!") } [string]$typeName = $array[0].GetType().Name; [ValidateNotNullOrWhiteSpace()][string]$typeName = $typeName $NewCollection = [scriptblock]::Create("param (`$i)`n`$l = [System.Collections.Generic.List[$typeName]]::new(`$i.objects.Count);`n`$i.objects.GetEnumerator().ForEach({ [void]`$l.Add(`$_) });`nreturn [System.Collections.ObjectModel.ReadOnlyCollection[$typeName]]::new(`$l);") return $NewCollection.Invoke([PSCustomObject]@{ objects = $array } ) } } |