Parsing a Variable Number of Arguments

Optional parameters are a great new feature in VB4, but the ParamArraykeyword is an overlooked addition to function and subroutine declarations.The ParamArray keyword allows an unspecified number of Variantparameters to be passed to a routine as an array. This subroutineuses the ParamArray keyword to parse a string into a variablenumber of arguments, handling text and numerics as it goes:

 Public Sub SplitIt(ByVal S As String, _        ByVal Delim As String, ParamArray _        Out() As Variant)        'Dim xIndex As Integer, xPos As         'Integer, xNext As String        'For xIndex = LBound(Out) To                 'UBound(Out)                xPos = InStr(S, Delim)                If xPos = 0 Then                        xNext = S                        S = ""                Else                        xNext = Left$(S, xPos - 1)                        S = Right$(S, Len(S) - xPos _                                + 1 - Len(Delim))                End If                Select Case VarType(Out(xIndex))                        Case vbInteger To vbCurrency                                Out(xIndex) = Val(xNext)                        Case vbString                                Out(xIndex) = xNext                End Select        NextEnd Sub

Now you can use SplitIt to split any text string into any variablesat each delimiter. For example:

 Dim X As String, Y As Double, Z As IntegerSplitIt "A,5.5,6", ",",X,Y,Zreturns:X="A", Y=5.5, Z=6,While:SplitIt "AxxxBxxxC", "xxx", , Xreturns:X="B"
Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS