JerryD Posted June 20, 2010 Share Posted June 20, 2010 I'm working on converting a VB Script to AutoIt. I'm by no means fluent in VB, but can usually figure out what's going on.The script is using a built in function IsNull which I originally thought would mean to return 1 if the variable was either equal to zero or a null string, but that didn't seem to be it.I found a site that has a list of VB Script Commands and discovered that IsNull returns 1 if the variable passed is a DateTime type (IsNull(expression) Is expression a DateTime? True/False).What AutoIt variable type or types would this be? Specifically, how might one write a function IsNull that operates the same way on a variable - specifically part of an object.Or am I oversimplifying the question?Thanks! Link to comment Share on other sites More sharing options...
enaiman Posted June 20, 2010 Share Posted June 20, 2010 In AutoIt you have either strings or numbers. You can have the date/time in two formats: - string: 21/06/2010 10:20 - Unix Time Format: (the number of seconds that have elapsed since midnight 1.1.1970 UTC) So, in order to check if something is a "valid time" you will need to use some checks (best with RegEx). Not very easy but doable. That's what "I" know; others might know more than myself. Good luck. SNMP_UDF ... for SNMPv1 and v2c so far, GetBulk and a new example script wannabe "Unbeatable" Tic-Tac-Toe Paper-Scissor-Rock ... try to beat it anyway :) Link to comment Share on other sites More sharing options...
ResNullius Posted June 21, 2010 Share Posted June 21, 2010 (edited) @JerryD,Looking at the script you linked to, the 1st use of IsNull is thisSet UpdateSession = CreateObject("Microsoft.Update.Session") if IsNull(UpdateSession) then wscript.quit end ifIf that's the use you're wondering about, then this is simply testing for the valid creation of the Update.Session object.So AutoIt equivalent would be$oUpdateSession = ObjCreate("Microsoft.Update.Session") If Not IsObj($oUpdateSession) then exit EndIfHope that helps.Edit: Looking at the rest of the script, IsNull is also sometimes being used as you suspected, to test whether a string is passed (as in arguements to a function).Perhaps if you post your conversion efforts and where you feel the script is failing, we can offer more insight.Edit 2: Looks like the VB Functions page you linked to is a victim of a cut and paste error for their IsNull definition. See this one instead: http://www.w3schools.com/vbscript/func_isnull.asp Edited June 21, 2010 by ResNullius Link to comment Share on other sites More sharing options...
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