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WeekOfTheYear function

In unit DateUtils

Extract the week of the year (and optionally year) of a TDateTime indication.

Declaration

pascal
function WeekOfTheYear(const AValue: TDateTime): Word; overload

Arguments

AValue

Date from which to extract week.

Function result

Week of the year in which Avalue falls.

Description

WeekOfTheYear extracts the week of the year from Avalue and returns it, and optionally returns the year as well. It returns the same value as WeekOf.

Note that weeks are numbered from 1 using the ISO 8601 standard, and the day of the week as well. This means that the year may not be the same as the year part of the date, since the week may start in the previous year as the first week of the year is the week with at least 4 days in it.

See also

Example: ex40

pascal
Program Example40;

{ This program demonstrates the WeekOfTheYear function }

Uses SysUtils,DateUtils;

Var
  N : TDateTime;

Begin
  N:=Now;
  Writeln('Month of the year       : ',MonthOfTheYear(N));
  Writeln('Week of the year        : ',WeekOfTheYear(N));
  Writeln('Day of the year         : ',DayOfTheYear(N));
  Writeln('Hour of the year        : ',HourOfTheYear(N));
  Writeln('Minute of the year      : ',MinuteOfTheYear(N));
  Writeln('Second of the year      : ',SecondOfTheYear(N));
  Writeln('MilliSecond of the year : ',
          MilliSecondOfTheYear(N));
End.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.