age calculation on Windows vs Mac

[Bob Sneidar]

I purchased Infowallet, (it's awesome) and so feel it's alright to scavenge your bit of code. :-)

Bob


On Jul 19, 2011, at 4:24 PM, Bill Vlahos wrote:

> The problem is the epoch date in Windows is 1970 and LiveCode can't deal with dates earlier than that in Windows. You will need to use a VBScript.
> 
> Here is what I use in InfoWallet which handles Windows, Mac, and Linux correctly which was based on code provided by folks on this list.
> 
> on calcAge tDate,asOf
>   -- returns the current age based on a DOB of tDate
>   -- as of the date asOf, or if asOf = empty, as of today
>   if tDate = empty then return empty
>   if the platform is "WIn32" then
>      isADate tDate
>      if the result then
>         put "sdate = " & quote & tDate & quote into vFive
>         put return & "result = DateDiff(" & quote & "d" & quote & ",sdate,Date)" after vFive
>         put return & "trueage = result / 365" after vFive
>         put return & "result = Left(trueage,2)" after vFive
>         do vFive as vbscript
>         return the result
>      else
>         return empty
>      end if
>   else
>      if tDate is not a date then return empty
>      if asOf = empty then
>         put the date into asOf
>      end if
>      set the itemdelimiter to "/"
>      put item -1 of the short date into nowYr
>      set the centurycutoff to nowYr+1
>      set the itemdelimiter to comma
>      convert tDate to dateItems
>      convert asOf to dateitems
>      put item 1 of asOf - item 1 of tDate - 1 into tAge
>      put item 1 of asOf into item 1 of tDate
>      convert tDate to seconds
>      convert asOf to seconds
>      if tDate <= asOf then add 1 to tAge
>      return tAge
>   end if
> end calcAge
> 
> 
> Bill Vlahos
> _________________
> InfoWallet (http://www.infowallet.com) is about keeping your important life information with you, accessible, and secure.
> 
> On Jul 19, 2011, at 9:23 AM, André Bisseret wrote:
> 
>> Bonjour,
>> 
>> I am a Mac user but I recently bought a PC (windows 7) in order to test my standalones for windows more quickly.
>> 
>> I am fighting for hours now with the following problem :
>> 
>> In an app., I have a handler that calculates the age  from the short birth date  (thanks to Jim Ault who gave it on the list).
>> The birth date is jj/mm/AAAA or jj/mm/AA as well.
>> 
>> This handler works fine on Mac, but not on windows. 
>> 
>> On windows, the age is invariably 100 if the birth year < 1970. (with JJ/MM/AA or JJ/MM/AAAA (as bad ;-(
>> If the birth year > = 1970 then the age is correct.
>> 
>> I tried to play with the centuryCutOff but without any success (on windows).
>> 
>> I am not familiar with Windows : what am I missing ? Is it a matter of computer setting or should I program differently for windows than for mac !?
>> 
>> Thanks a lot in advance for any help
>> 
>> Best regards from Grenoble
>> 
>> André
>> 
>> P.S. By the way, I used to use a search engine (if I well remember, it was in the help menu of livecode) I do not find it any more; has it been suppressed ? (or here again, I am missing something !)
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> 
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