How to pass $_ ($PSItem) in a ScriptBlock

Question

I\'m basically building my own parallel foreach pipeline function, using runspaces.

My problem is: I call my function like this:

somePipeline | MyNew         


        

Answer 1

# I was looking for an easy way to do this in a scripted function,
# and the below worked for me in PSVersion 5.1.17134.590

function Test-ScriptBlock {
    param(
        [string]$Value,
        [ScriptBlock]$FilterScript={$_}
    )
    $_ = $Value
    & $FilterScript
}
Test-ScriptBlock -Value 'unimportant/long/path/to/foo.bar' -FilterScript { [Regex]::Replace($_,'unimportant/','') }