| 1 | // The next line includes <boost/date_time/posix_time/posix_time.hpp>
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| 2 | // and a few lines of adapter code.
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| 3 | #include <boost/icl/ptime.hpp>
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| 4 | #include <iostream>
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| 5 | #include <boost/icl/interval_map.hpp>
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| 6 |
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| 7 | using namespace std;
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| 8 | using namespace boost::posix_time;
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| 9 | using namespace boost::icl;
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| 10 |
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| 11 | // Type set<string> collects the names of party guests. Since std::set is
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| 12 | // a model of the itl's set concept, the concept provides an operator +=
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| 13 | // that performs a set union on overlap of intervals.
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| 14 | typedef std::set<string> GuestSetT;
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| 15 |
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| 16 | void boost_party()
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| 17 | {
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| 18 | GuestSetT mary_harry;
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| 19 | mary_harry.insert("Mary");
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| 20 | mary_harry.insert("Harry");
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| 21 |
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| 22 | GuestSetT diana_susan;
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| 23 | diana_susan.insert("Diana");
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| 24 | diana_susan.insert("Susan");
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| 25 |
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| 26 | GuestSetT peter;
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| 27 | peter.insert("Peter");
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| 28 |
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| 29 | // A party is an interval map that maps time intervals to sets of guests
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| 30 | interval_map<ptime, GuestSetT> party;
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| 31 |
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| 32 | party.add( // add and element
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| 33 | make_pair(
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| 34 | interval<ptime>::right_open(
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| 35 | time_from_string("2008-05-20 19:30"),
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| 36 | time_from_string("2008-05-20 23:00")),
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| 37 | mary_harry));
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| 38 |
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| 39 | party += // element addition can also be done via operator +=
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| 40 | make_pair(
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| 41 | interval<ptime>::right_open(
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| 42 | time_from_string("2008-05-20 20:10"),
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| 43 | time_from_string("2008-05-21 00:00")),
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| 44 | diana_susan);
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| 45 |
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| 46 | party +=
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| 47 | make_pair(
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| 48 | interval<ptime>::right_open(
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| 49 | time_from_string("2008-05-20 22:15"),
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| 50 | time_from_string("2008-05-21 00:30")),
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| 51 | peter);
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| 52 |
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| 53 |
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| 54 | interval_map<ptime, GuestSetT>::iterator it = party.begin();
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| 55 | cout << "----- History of party guests -------------------------\n";
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| 56 | while(it != party.end())
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| 57 | {
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| 58 | interval<ptime>::type when = it->first;
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| 59 | // Who is at the party within the time interval 'when' ?
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| 60 | GuestSetT who = (*it++).second;
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| 61 | cout << when << ": " << who << endl;
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| 62 | }
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| 63 |
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| 64 | }
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| 65 |
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| 66 |
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| 67 | int main()
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| 68 | {
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| 69 | cout << ">>Interval Container Library: Sample boost_party.cpp <<\n";
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| 70 | cout << "-------------------------------------------------------\n";
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| 71 | boost_party();
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| 72 | return 0;
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| 73 | }
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| 74 |
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| 75 | // Program output:
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| 76 | /*-----------------------------------------------------------------------------
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| 77 | >>Interval Container Library: Sample boost_party.cpp <<
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| 78 | -------------------------------------------------------
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| 79 | ----- History of party guests -------------------------
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| 80 | [2008-May-20 19:30:00, 2008-May-20 20:10:00): Harry Mary
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| 81 | [2008-May-20 20:10:00, 2008-May-20 22:15:00): Diana Harry Mary Susan
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| 82 | [2008-May-20 22:15:00, 2008-May-20 23:00:00): Diana Harry Mary Peter Susan
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| 83 | [2008-May-20 23:00:00, 2008-May-21 00:00:00): Diana Peter Susan
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| 84 | [2008-May-21 00:00:00, 2008-May-21 00:30:00): Peter
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| 85 | -----------------------------------------------------------------------------*/
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