PowerShell 7.3 - implementing Running a Parallel ForEach-Object and Managing State Variables
I'm stuck trying to I'm stuck on something that should probably be simple... I'm working on a PowerShell script where I need to process a large list of items in parallel for efficiency. I'm using the `ForEach-Object -Parallel` feature available in PowerShell 7.3. However, I'm running into issues with state management, specifically when it comes to using shared variables within the parallel script block. I have a global variable that I want to update based on the results of each parallel execution, but it seems that the variable does not retain its value across iterations, which leads to unexpected results. Here's a simplified version of what I have: ```powershell $global:totalProcessed = 0 $items = 1..100 $items | ForEach-Object -Parallel { Start-Sleep -Milliseconds 50 # Simulating some processing time $global:totalProcessed += 1 } -ThrottleLimit 10 Write-Host "Total processed: $global:totalProcessed" ``` When I run this, I always get `Total processed: 0`, which is not what I expect. I tried using `$using:totalProcessed`, but that gives me an behavior saying that it want to be updated within the parallel block. I've also looked into using a `Runspace` to manage state, but that feels overly complex for what I'm trying to achieve. Is there a recommended way to manage state variables when using `ForEach-Object -Parallel`? Or am I missing something about how variable scoping works in this context? Any insights would be greatly appreciated! I'd really appreciate any guidance on this.