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MathGroup Archive 2001

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RE: Converting from string to integer and back

  • To: mathgroup at smc.vnet.net
  • Subject: [mg29053] RE: [mg29030] Converting from string to integer and back
  • From: "David Park" <djmp at earthlink.net>
  • Date: Sat, 26 May 2001 21:53:44 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Brian,

It might be easier to do this with integer arithmetic, rather than
converting to strings and back.

Here is one possible routine.

splitdate[(date1_Integer)?Positive] :=
  Module[{year, month, day, date = date1},
   year = IntegerPart[date/10000];
    date = date - 10000*year;
    month = IntegerPart[date/100];
    day = date - 100*month;
   {year, month, day}]

splitdate[20010525]
{2001, 5, 25}


David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/

> From: brian [mailto:polar at cloud9.net]
To: mathgroup at smc.vnet.net
>
> Is there an easy way to convert an integer to a string and then back to
> an integer?  I have a file containing dates in the YYYYMMDD format.  I
> want to convert these dates to {YYYY, MM, DD} so that I can some of the
> functions in the misc`Calendar package.  But at this point I am lost as
> to how to split the date into year,month, day.  StringTake is the only
> way I could think of but doesn't work as the head of the date is
> integer.  If there was a way to convert the date to a string I can split
> the date and then convert this back to an integer but I have seen no
> treatment of anything like this in the books I have.  I guess I'm a
> little more used to handling text in perl.  Any help while I'm riding up
> the learning curve is greatly appreciated.
>
> Brian Meehan
>
>



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