SecondOfTheWeek - C++ Builder

C++ Builder 参考手册 ➙ System::Dateutils ➙ SecondOfTheWeek


这个日期时间在所在周的第几秒钟 (ISO 8601)

头文件:#include
命名空间:System::Dateutils
函数原型:

unsigned __fastcall SecondOfTheWeek(const System::TDateTime AValue);

参数:

  • AValue:日期时间类型变量;

返回值:

  • 这个日期时间在所在周的第几秒钟 (ISO 8601),从 0 开始:
    0:星期一的 0 时 0 分 0 秒,1:星期一的 0 时 0 分 1 秒,……
  • 可以用函数 StartOfTheWeek 得到一个日期时间的所在周的开始时间 (星期一的 00:00:00.000 时),可以用函数 EndOfTheWeek 得到一个日期时间所在周的结束时间 (星期日的 23:59:59.999);
  • 用一个日期时间减去所在周的星期一 00:00:00.000,得到从星期一到这个日期时间经过的天数 (两个日期时间类型数值相减得到 double 类型的双精度浮点数,小数,例如 0.5 表示 12 个小时),天数乘以24就得到了小时数,再乘以60得到分钟数,再乘以 60 得到秒数。

相关:

  • System::Dateutils::DateOf
  • System::Dateutils::DateTimeToUnix
  • System::Dateutils::DayOf
  • System::Dateutils::DayOfTheMonth
  • System::Dateutils::DayOfTheWeek
  • System::Dateutils::DayOfTheYear
  • System::Dateutils::DecodeDateMonthWeek
  • System::Dateutils::DecodeDateTime
  • System::Dateutils::DecodeDateWeek
  • System::Dateutils::EncodeDateMonthWeek
  • System::Dateutils::EncodeDateTime
  • System::Dateutils::EncodeDateWeek
  • System::Dateutils::HourOf
  • System::Dateutils::HourOfTheMonth
  • System::Dateutils::HourOfTheWeek
  • System::Dateutils::HourOfTheYear
  • System::Dateutils::IsValidDateMonthWeek
  • System::Dateutils::IsValidDateWeek
  • System::Dateutils::MilliSecondOf
  • System::Dateutils::MilliSecondOfTheYear
  • System::Dateutils::MinuteOf
  • System::Dateutils::MinuteOfTheMonth
  • System::Dateutils::MinuteOfTheWeek
  • System::Dateutils::MinuteOfTheYear
  • System::Dateutils::MonthOf
  • System::Dateutils::MonthOfTheYear
  • System::Dateutils::SecondOf
  • System::Dateutils::SecondOfTheMonth
  • System::Dateutils::SecondOfTheYear
  • System::Dateutils::TimeOf
  • System::Dateutils::TryEncodeDateTime
  • System::Dateutils::UnixToDateTime
  • System::Dateutils::WeekOfTheMonth
  • System::Dateutils::WeekOfTheYear
  • System::Dateutils::WeeksInYear
  • System::Dateutils::YearOf
  • System::Dateutils
  • System::Sysutils::CurrentYear
  • System::Sysutils::Date
  • System::Sysutils::DecodeDate
  • System::Sysutils::DecodeDateFully
  • System::Sysutils::DecodeTime
  • System::Sysutils::EncodeDate
  • System::Sysutils::EncodeTime
  • System::Sysutils::FormatDateTime
  • System::Sysutils::Now
  • System::Sysutils::Time
  • System::Sysutils::TryEncodeDate
  • System::Sysutils::TryEncodeTime
  • System::Sysutils::TryStrToDate
  • System::Sysutils::TryStrToDateTime
  • System::Sysutils::TryStrToTime
  • System::Sysutils

C++ Builder 参考手册 ➙ System::Dateutils ➙ SecondOfTheWeek

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