Using PowerShell to find the differences in strings

Question

So I\'m playing around with Compare-Object, and it works fine for comparing files. But what about just strings? Is there a way to find the difference between strings? Compar

Answer 1

Perhaps something like this:

function Compare-String {
  param(
    [String] $string1,
    [String] $string2
  )
  if ( $string1 -ceq $string2 ) {
    return -1
  }
  for ( $i = 0; $i -lt $string1.Length; $i++ ) {
    if ( $string1[$i] -cne $string2[$i] ) {
      return $i
    }
  }
  return $string1.Length
}

The function returns -1 if the two strings are equal or the position of the first difference between the two strings. If you want case-insensitive comparisons, you would need to use -eq instead of -ceq and -ne instead of -cne.