Return the first day of the week, given a date.
Source position: dateutil.inc line 175
function StartOfTheWeek( |
const AValue: TDateTime |
):TDateTime; |
AValue |
|
Day in the week. |
First day of the week, in TDateTime format.
StartOfTheWeek extracts the year and week parts of AValue and returns a TDateTime value with the date of the first day of that week as the StartOfAWeek function.
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Return a day of the week, given a year, week and day in the week. |
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Calculate a TDateTime value which represents the end of a week, given a date in that week. |
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Return the last moment of day of the week, given a year and a week in the year. |
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Return first date of month, given a year/month pair. |
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Calculate a TDateTime value representing the last day of a year, given a date in that year. |
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Calculate a TDateTime value representing the last day of a year. |
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Calculate a TDateTime value representing the last day of the month, given a day in that month. |
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Calculate a TDateTime value representing the last day of the indicated month. |
Program Example32; { This program demonstrates the StartOfTheWeek function } Uses SysUtils,DateUtils; Const Fmt = '"First day of this week : "dd mmmm yyyy'; Begin Writeln(FormatDateTime(Fmt,StartOfTheWeek(Today))); End.