Question

Given a list of items in PowerShell, how do I find the index of the current item from within a loop?

For example:

$letters = { 'A', 'B', 'C' }

$letters | % {
  # Can I easily get the index of $_ here?
}

The goal of all of this is that I want to output a collection using Format-Table and add an initial column with the index of the current item. This way people can interactively choose an item to select.

Answer 1

I am not sure it’s possible with an “automatic” variable. You can always declare one for yourself and increment it:

$letters = { 'A', 'B', 'C' }
$letters | % {$counter = 0}{...;$counter++}

Or use a for loop instead…

for ($counter=0; $counter -lt $letters.Length; $counter++){...}