' An extended version of Array.LastIndexOf, with more options for string ' searches. The function returns the index of the found element,' or -1 if no element is found'' Example:' Dim arr As String() = {"this is a string for my test", "test number 2",' "another String", "do you like this string?", "I like running tests"}' Dim i As Integer = arr.GetUpperBound(0) + 1'' Do' i = ArrayLastIndexOf(arr, "string", i - 1, True, False)' If i > -1 Then' Debug.WriteLine(arr(i))' End If' Loop While i > -1Function ArrayLastIndexOf(ByVal arr As String(), ByVal search As String) As _ Integer Return ArrayLastIndexOf(arr, search, arr.GetUpperBound(0))End Function' this overloaded version allows you to specify also the array's index to start ' fromFunction ArrayLastIndexOf(ByVal arr As String(), ByVal search As String, _ ByVal startIndex As Integer) As Integer Return ArrayLastIndexOf(arr, search, startIndex, True)End Function' this overloaded version allows you to specify also whether the search is case-' sensitiveFunction ArrayLastIndexOf(ByVal arr As String(), ByVal search As String, _ ByVal startIndex As Integer, ByVal caseSensitive As Boolean) As Integer Return ArrayLastIndexOf(arr, search, startIndex, caseSensitive, True)End Function' this overloaded version allows you to specify also whether only exact matches ' are validFunction ArrayLastIndexOf(ByVal arr As String(), ByVal search As String, _ ByVal startIndex As Integer, ByVal caseSensitive As Boolean, _ ByVal exactMatch As Boolean) As Integer ' if the search is case-sensitive and it runs against exact matches only, ' use the standard Array.LastIndexOf function If caseSensitive And exactMatch Then Return Array.LastIndexOf(arr, search, startIndex) End If If Not caseSensitive Then search = search.ToLower() Dim i As Integer For i = startIndex To 0 Step -1 Dim currElem As String = arr(i) ' if the search is not case-sensitive, convert everything to lower-case If Not caseSensitive Then currElem = currElem.ToLower() If exactMatch Then If search = currElem Then Return i Else ' if partial matches are ok, use the String.IndexOf function, ' and return the ' current index if a partial match is found Dim j As Integer = currElem.IndexOf(search) If j > -1 Then Return i End If Next ' if we get here, no element matches the search options, so return -1 Return -1 ' ============================= ' Alternative implementation that clones and reverses the input array, ' and passes it to ArrayIndexOf ' It results to be slower that the implementation above though ' 'Dim arrRev As String() = arr.Clone() 'Array.Reverse(arrRev) 'Dim i As Integer = ArrayIndexOf(arrRev, search, ' arr.GetUpperBound(0) - startIndex, caseSensitive, exactMatch) 'If i = -1 Then ' Return i 'Else ' Return arr.GetUpperBound(0) - i 'End If ' =============================End Function


What is Metadata?
What is metadata? Well, It’s an odd concept to wrap your head around. Metadata is essentially the secondary layer of data that tracks details about the “regular” data. The regular