Question

I have an array of strings. Not sure if there is simple way to get the index of an item first found in the array?

# example array
$array = "A", "B", "C"
$item = "B"
# the following line gets null, any way to get its index?
$index = $array | where {$_ -eq $item} | ForEach-Object { $_.Index }

I could do it in a loop. not sure if there is any alternative way?

Answer 1

Use a for loop (or a foreach loop that iterates over the array index…same difference). I don’t know of any system variable that holds the current array index inside a foreach loop, and I don’t think one exists.

# example array
$array = "A", "B", "C"
$item = "B"
0..($array.Count - 1) | Where { $array[$_] -eq $item }