perldoc > Date::Manip::Migration5to6(3pm)

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 AT cpan.org)