boost学习笔记（时间点）

时间点ptime就是日期(date)加上一个不超过24小时的时间长度(time_duration)。

#include <iostream>
#include <boost\date_time\gregorian\gregorian.hpp>
#include <boost\date_time\posix_time\posix_time.hpp>

using namespace std;
using namespace boost;

int main() {


    //创建键日期
    gregorian::date d = gregorian::day_clock::local_day();
    //创建1小时的时间长度
    posix_time::time_duration td(1,0,0,0);
    //使用日期和时间长度创建时间点
    posix_time::ptime p(d,td);
    cout << p << endl;

    //时间点运算
    posix_time::hours h(3);
    posix_time::ptime p1 = p + h;
    cout << p1 << endl;
    cout << posix_time::to_iso_extended_string(p1) << endl;
    assert(p < p1);


    //和tm之间的转换
    tm t = posix_time::to_tm(p);
    posix_time::ptime p2 = posix_time::ptime_from_tm(t);


    //时间点迭代器

    posix_time::time_iterator timeIter(p,posix_time::minutes(20));
    while (timeIter < p + posix_time::hours(1)) {
        cout << *timeIter << endl;
        ++timeIter;
    }

    return 0;
}

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