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<h1>Boost Date-Time Change History</h1>
<p>
<p> <p>
<hr>
<a href="index.html">Overall Index</a>
<p>
<h3>Changes from Boost 1.30 to 1.31 (date_time 1.01 to 1.02)</h3>
<p class="bold">
<table>
<tr class="row_title"><td>Type</td><td>Description</td></tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Time_duration from_string is now correctly constructed
from a negative value. (ie "-0:39:00.000")
Code provided by Bart Garst.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Fixed many MSVC compiler warnings when compiled with
warning level 4.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Fixed many GCC compiler warnings when compiled with
-Wshadow.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added prefix decrement operator (--) for date and time iterators.
See <a href="time_iterators.html">Time Iterators</a>
and <a href="date_iterators.html">Date Iterators</a>
for more details.
Code provided by Bart Garst.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Special values functionality (eg: infinities, not_a_date_time)
added for date_duration, time_duration and time classes.
Code provided by Bart Garst.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Fixed time_duration_traits calculation bug which was
causing time duration to be limited to 32bit range even
when 64 bits were available. Thanks to Joel de Guzman
for tracking this down.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Provided additional operators for duration types (eg:
date_duration, time_duration). This includes divideable
by integer and fixes to allow +=, -= operators. Thanks to
Bart Garst for writing this code. Also, the documentation
of <a href="Calculations.html">Calculations</a> has been
improved.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Added typedefs to boost::gregorian gregorian_types.hpp various
date_generator function classes.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added from_time_t function to convert time_t to a ptime. See
<a href="class_ptime.html#constructfromtimet">from_time_t</a>
from more.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added a span function for combining periods. See
<a href="class_date_period.html">date period</a> and
<a href="class_time_period.html">time period</a> docs.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added a function to time_duration to get the total number
of seconds in a duration truncating any fractional seconds.
In addition, other resolutions were added to allow for
easy conversions. For example<br>
seconds(1).total_milliseconds() == 1000<br>
seconds(1).total_microseconds() == 1000000<br>
hours(1).total_milliseconds() == 3600*1000 //3600 sec/hour<br>
seconds(1).total_nanoseconds() == 1000000000<br>
See <a href="class_time_duration.html">time duration</a> for more.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added output streaming operators for the
<a href="date_algorithms.html">date generator</a>
classes - partial_date, first_kday_after, first_kday_before, etc. Thanks to Bart Garst for this work.
</td>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added unary- operators for durations for reversing the sign
of a time duration. For example: <br>
time_duration td(5,0,0); //5 hours<br>
td = -td; //-5 hours<br>
Thanks to Bart Garst for this work.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added support for parsing strings with 'month names'.
Thus creating a date object from string now accepts
multiple formats ("2003-10-31","2003-Oct-31", and
"2003-October-31").
Thus, date d = from_simple_string("2003-Feb-27") is now
allowed. A bad month name string
(from_simple_string("2003-SomeBogusMonthName-27")) will
cause a bad_month exception. In addition, there are
new convenience functions that handle different orderings of the
year, month, and day. The from_us_date and from_uk_date
<a href="class_date.html#constructfromstring">(reference)</a>
provide parsing for the order month-day-year and day-month-year respectively.
On most compilers the month string compare is case insensitive.
Thanks to Bart Garst for this work.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Various documentation fixes. Thanks to Bart Garst for
updates.
</td>
</tr>
</table>
<h3>Changes from Boost 1.29 to 1.30 (date_time 1.00 to 1.01)</h3>
<p class="bold">
Notice: The interface to the <font class="el">partial_date</font>
class
<a href="date_algorithms.html">(see date_algorithms)</a>
was changed. The order of construction parameters was changed
which will cause some code to fail execution. This change was
made to facilitate more generic local time adjustment code.
Thus instead of specifying partial_date pd(Dec,25) the code
needs to be changed to partial_date pd(25, Dec);
<p>
<table>
<tr class="row_title"><td>Type</td><td>Description</td></tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Added new experimental feature for Daylight Savings Time
calculations. This allows traits based specification of
dst rules.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added new interfaces to calculate julian day and modified
julian day to the gregorian date class.
See <a href="class_date.html#accessors">boost::gregorian::date</a>.
</td>
</tr>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Add new interface to calculate iso 8601 week number for
a date.
See <a href="class_date.html#accessors">boost::gregorian::date</a>.
</td>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Add an iso 8601 time date-time format (eg: YYYYMMDDTHHHMMSS)
parsing function.
See <a href="class_ptime.html#constructfromstring">Class ptime</a> for more information.
</td>
<tr class="content">
<td class="nowrap">Feature</td>
<td>Added a length function to the period template so that both
date_periods and time_periods will now support this function.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Split Jamfiles so that libs/date_time/build/Jamfile
only builds library and /libs/date_time/libs/test/Jamfile
which runs tests.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Fixed many minor documentation issues.</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Removed the DATE_TIME_INLINE macro which was causing
link errors. This macro is no longer needed in projects
using the library.
</td>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Added missing typedef for year_iterator to
gregorian_types.hpp</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Fixed problem with gregorian ostream operators
that prevented the use of wide streams.
</td>
</tr>
<tr class="content">
<td class="nowrap">Bug Fix</td>
<td>Tighten error handling for dates so that
date(2002, 2, 29) will throw a bad_day_of_month
exception.
Previously the date would be incorrectly constructed.
Reported by sourceforge bug: 628054 among others.
</td>
</tr>
</table>
<hr>
<address><small>
<!-- hhmts start -->
Last modified: Sun Feb 1 09:21:26 MST 2004
<!-- hhmts end -->
by <a href="mailto:jeff@crystalclearsoftware.com">Jeff Garland</a> © 2000-2004
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