| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN" |
| "../../../tools/boostbook/dtd/boostbook.dtd"> |
| |
| <!-- Copyright (c) 2001-2005 CrystalClear Software, Inc. |
| Subject to the Boost Software License, Version 1.0. |
| (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) |
| --> |
| |
| <section id="date_time.examples.calc_rules"> |
| <title>Daylight Savings Calc Rules</title> |
| |
| <para> |
| Example of creating various Daylight Savings Calc Rule objects. |
| </para> |
| <programlisting> |
| <![CDATA[ |
| /* A simple example for creating various dst_calc_rule instances |
| */ |
| |
| #include "boost/date_time/gregorian/gregorian.hpp" |
| #include "boost/date_time/local_time/local_time.hpp" |
| #include <iostream> |
| |
| int |
| main() |
| { |
| using namespace boost; |
| using namespace local_time; |
| using namespace gregorian; |
| |
| /***** create the necessary date_generator objects *****/ |
| // starting generators |
| first_day_of_the_week_in_month fd_start(Sunday, May); |
| last_day_of_the_week_in_month ld_start(Sunday, May); |
| nth_day_of_the_week_in_month nkd_start(nth_day_of_the_week_in_month::third, |
| Sunday, May); |
| partial_date pd_start(1, May); |
| // ending generators |
| first_day_of_the_week_in_month fd_end(Sunday, Oct); |
| last_day_of_the_week_in_month ld_end(Sunday, Oct); |
| nth_day_of_the_week_in_month nkd_end(nth_day_of_the_week_in_month::third, |
| Sunday, Oct); |
| partial_date pd_end(31, Oct); |
| |
| /***** create the various dst_calc_rule objects *****/ |
| dst_calc_rule_ptr pdr(new partial_date_dst_rule(pd_start, pd_end)); |
| dst_calc_rule_ptr flr(new first_last_dst_rule(fd_start, ld_end)); |
| dst_calc_rule_ptr llr(new last_last_dst_rule(ld_start, ld_end)); |
| dst_calc_rule_ptr nlr(new nth_last_dst_rule(nkd_start, ld_end)); |
| dst_calc_rule_ptr ndr(new nth_day_of_the_week_in_month_dst_rule(nkd_start, |
| nkd_end)); |
| |
| return 0; |
| } |
| |
| ]]> |
| </programlisting> |
| </section> |