NAME

       Date::Manip::Migration5to6 - how to upgrade from 5.xx to 6.00

SYNOPSIS

       When upgrading from Date::Manip 5.xx to 6.00, a few changes may be necessary to your
       scripts.

       The Date::Manip::Changes5to6 document lists in more detail the ways in which Date::Manip
       changed, but very few of these actually entail changes to your script.

       It should be noted that once the changes are made to your script, it will no longer run
       correctly in 5.xx.

NECESSARY AND SUGGESTED CHANGES

       The following changes are necessary, or strongly suggested:

       Reading config files with Date_Init
           If you use Date_Init to read any config files (if you do business mode calculations,
           you probably do), you should remove all of the following config variables from your
           call to Date_Init:

              GlobalCnf=FILE
              PersonalCnf=FILE
              PathSep=*
              IgnoreGlobalCnf=*
              PersonalCnfPath=*

           and replace them with:

              ConfigFile=FILE

           where FILE is now the full path to a config file. Also, the ConfigFile argument should
           be the first argument in Date_Init.

       Date_ConvTZ
           The Date_ConvTZ function has changed. It should now take 3 arguments:

              $date = Date_ConvTZ($date,$from,$to);

           If $from is not given, it defaults to the local time zone. If $to is not given, it
           defaults to the local time zone.

           The date is converted from the $from time zone into the $to time zone. Both should be
           any time zone (or alias) supported by Date::Manip.

           The old $errlevel argument is no longer handled.

       ConvTZ and TZ config variables
           If you use either the ConvTZ or TZ config variables, you should replace them with
           either SetDate or ForceDate. See the Date::Manip::Config document for information.

           The TZ variable will continue to work until Dec 2015 at which point it will be
           removed.

       Other deprecated config variables
           The following config variables have been deprecated, but will continue to function
           (though they will be removed at a future date):

              TZ           (removed Mar 2016)

           The following variables have been removed. If you use any of them, you may need to
           modify your scripts:

              IntCharSet
              GlobalCnf
              PersonalCnf
              PathSep
              IgnoreGlobalCnf
              PersonalCnfPath
              ConvTZ
              Internal
              TodayIsMidnight
              DeltaSigns
              UpdateCurrTZ
              ResetWorkdDay

       today, yesterday, tomorrow
           If you parse the strings "today", "yesterday", or "tomorrow" in order to get the time
           now, or 24 hours in the past/future, this will no longer work.  These strings now
           refer strictly to the date (so "today" is the current day at midnight, "yesterday" is
           the previous day at midnight, etc.).

           To get the time now, 24 hours ago, or 24 hours in the future, you would need to parse
           the strings "now", "-24:00:00", or "+24:00:00" respectively.

       Do not use Memoize
           In 5.xx, it was documented that you could use the module Memoize to speed up
           Date::Manip, especially when sorting dates.

           This information is no longer accurate. Using Memoize in conjunction with Date::Manip
           should have little impact on performance, and may lead to incorrect results,
           especially if you change config variables.

           Please refer to "GENERAL CHANGES" in Date::Manip::Changes5to6 for more information.

       If you find other instances where it is necessary to modify your script, please email me
       so that I can add that information to this document.

BUGS AND QUESTIONS

       Please refer to the Date::Manip::Problems documentation for information on submitting bug
       reports or questions to the author.

SEE ALSO

       Date::Manip        - main module documentation

LICENSE

       This script is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.

AUTHOR

       Sullivan Beck (sbeck@cpan.org)