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<hr><h1>time_periods.cpp</h1> Demonstrate some simple uses of time periods.
<p>
<div class="fragment"><pre><font class="comment">//Some simple examples of constructing and calculating with times</font>
<font class="comment">//Returns:</font>
<font class="comment">//[2002-Feb-01 00:00:00/2002-Feb-01 23:59:59.999999999] contains 2002-Feb-01 03:00:05</font>
<font class="comment">//[2002-Feb-01 00:00:00/2002-Feb-01 23:59:59.999999999] intersected with</font>
<font class="comment">//[2002-Feb-01 00:00:00/2002-Feb-01 03:00:04.999999999] is </font>
<font class="comment">//[2002-Feb-01 00:00:00/2002-Feb-01 03:00:04.999999999]</font>
<font class="preprocessor">#include "boost/date_time/posix_time/posix_time.hpp"</font>
<font class="preprocessor">#include <iostream></font>
<font class="keyword">using</font> <font class="keyword">namespace </font>boost::posix_time;
using namespace boost::gregorian;
<font class="comment">//Create a simple period class to contain all the times in a day</font>
class day_period : <font class="keyword">public</font> time_period
{
<font class="keyword">public</font>:
day_period(date d) : time_period(ptime(d),<font class="comment">//midnight</font>
ptime(d,hours(24)))
{}
};
<font class="keywordtype">int</font>
main()
{
date d(2002,Feb,1); <font class="comment">//an arbitrary date</font>
<font class="comment">//a period that represents a day </font>
day_period dp(d);
ptime t(d, hours(3)+seconds(5)); <font class="comment">//an arbitray time on that day</font>
<font class="keywordflow">if</font> (dp.contains(t)) {
std::cout << to_simple_string(dp) << <font class="stringliteral">" contains "</font>
<< to_simple_string(t) << std::endl;
}
<font class="comment">//a period that represents part of the day</font>
time_period part_of_day(ptime(d, hours(0)), t);
<font class="comment">//intersect the 2 periods and print the results</font>
<font class="keywordflow">if</font> (part_of_day.intersects(dp)) {
time_period result = part_of_day.intersection(dp);
std::cout << to_simple_string(dp) << <font class="stringliteral">" intersected with\n"</font>
<< to_simple_string(part_of_day) << <font class="stringliteral">" is \n"</font>
<< to_simple_string(result) << std::endl;
}
<font class="keywordflow">return</font> 0;
}
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