[Overview][Constants][Procedures and functions][Index] Reference for unit 'dateutils' (#rtl)

StartOfTheDay

Calculate the start of the day as a DateTime value, given a moment in the day.

Declaration

Source position: dateutil.inc line 165

function StartOfTheDay(

  const AValue: TDateTime

):TDateTime;

Arguments

AValue

  

DateTime from which to calculate start of the day.

Function result

Start of the day (00:00) as DateTime value

Description

StartOfTheDay extracts the date part of AValue and returns a TDateTime value with the date/time indication of the start (0:0:0.000) of this day.

See also

StartOfADay

  

Return the start of a day as a DateTime value, given a day indication

StartOfTheWeek

  

Return the first day of the week, given a date.

StartOfAWeek

  

Return a day of the week, given a year, week and day in the week.

StartOfAMonth

  

Return first date of month, given a year/month pair.

StartOfTheMonth

  

Calculate the first day of the month, given a date in that month.

EndOfTheWeek

  

Calculate a DateTime value which represents the end of a week, given a date in that week.

EndOfAWeek

  

Return the last moment of day of the week, given a year and a week in the year.

EndOfTheYear

  

Calculate a DateTime value representing the last day of a year, given a date in that year.

EndOfAYear

  

Calculate a DateTime value representing the last day of a year

EndOfTheMonth

  

Calculate a DateTime value representing the last day of the month, given a day in that month.

EndOfAMonth

  

Calculate a datetime value representing the last day of the indicated month

EndOftheDay

  

Calculate a datetime value that represents the end of a given day.

EndOfADay

  

Calculates a DateTime value representing the end of a specified day

Example

Program Example36;

{ This program demonstrates the StartOfTheDay function }

Uses SysUtils,DateUtils;

Const
  Fmt = '"Start of the day : "dd mmmm yyyy hh:nn:ss';


Begin
  Writeln(FormatDateTime(Fmt,StartOfTheDay(Today)));
End.

Documentation generated on: Nov 16 2015