If the date is not of the format mm/yy or the empty string, it should fail. So m/yy or mm/y will fail.
The reg exp should read: "a string beginning with a zero or one, followed by any digit, followed by /, followed by any two digits - all of that zero or one times." -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: 29 April 2004 10:16 To: [EMAIL PROTECTED] Subject: Re: [ cf-dev ] Reg Exp it looks to me like your regex is looking for either 99/99, or nothing at all. <cfif NOT Len(cardStartDate) OR (IsNumeric(Left(cardStartDate, 2)) AND IsNumeric(Right(cardStartDate, 2)))> return true </cfif> not sure that's even the best logic, e.g. what if someone enters 9/04 instead of 09/04? Perhaps you could treat it as a list with the delimiter being /, then check each half is numeric, maybe after trimming. "Douglas Humphris" <[EMAIL PROTECTED] To: <[EMAIL PROTECTED]> itech.net> cc: Subject: [ cf-dev ] Reg Exp 29/04/2004 10:03 Please respond to dev Hi, Can someone please help me with this regular expression ? can't figure out why it won't return true: <cfset reCardDate = "^(([0-1]{1,1})([0-9]{1,1})/([0-9]{2,2})){0,1}$" /> <cfset cardStartDate = "" /> <cfoutput>#REFind(reCardDate,cardStartDate)#</cfoutput> Basically, I want it to return true for the empty string, or for a valid mm/yy date format. Thanks, Douglas -- These lists are syncronised with the CFDeveloper forum at http://forum.cfdeveloper.co.uk/ Archive: http://www.mail-archive.com/dev%40lists.cfdeveloper.co.uk/ CFDeveloper Sponsors and contributors:- *Hosting and support provided by CFMXhosting.co.uk* :: *ActivePDF provided by activepdf.com* *Forums provided by fusetalk.com* :: *ProWorkFlow provided by proworkflow.com* *Tutorials provided by helmguru.com* :: *Lists hosted by gradwell.com* To unsubscribe, e-mail: [EMAIL PROTECTED] -- These lists are syncronised with the CFDeveloper forum at http://forum.cfdeveloper.co.uk/ Archive: http://www.mail-archive.com/dev%40lists.cfdeveloper.co.uk/ CFDeveloper Sponsors and contributors:- *Hosting and support provided by CFMXhosting.co.uk* :: *ActivePDF provided by activepdf.com* *Forums provided by fusetalk.com* :: *ProWorkFlow provided by proworkflow.com* *Tutorials provided by helmguru.com* :: *Lists hosted by gradwell.com* To unsubscribe, e-mail: [EMAIL PROTECTED]
