WithinPastWeeks

Check whether two TDateTimes are only a number of weeks apart

Declaration

Source position: dateutil.inc line 245

  function WithinPastWeeks(const ANow: TDateTime; const AThen: TDateTime; 
                          const AWeeks: Integer) : Boolean;

Description

WithinPastWeeks compares the timestamps ANow and AThen and returns True if the difference between them is at most AWeeks weeks apart, or False if they are further apart.

Remark

Since this function uses the WeeksBetween function to calculate the difference in Weeks, this means that fractional Weeks do not count, and the fractional part is simply dropped, so for two dates actually 2 and a half weeks apart, the result will also be True !!!

See also

Name	Description
WithinPastDays	Check whether two TDateTimes are only a number of days apart
WithinPastHours	Check whether two TDateTimes are only a number of hours apart
WithinPastMilliSeconds	Check whether two TDateTimes are only a number of milliseconds apart
WithinPastMinutes	Check whether two TDateTimes are only a number of minutes apart
WithinPastMonths	Check whether two TDateTimes are only a number of months apart
WithinPastSeconds	Check whether two TDateTimes are only a number of seconds apart
WithinPastYears	Check whether two TDateTimes are only a number of years apart

Example

Program Example49;
{ This program demonstrates the WithinPastWeeks function }
Uses SysUtils,DateUtils;
Procedure Test(ANow,AThen : TDateTime; AWeeks : Integer);
begin
 Write(DateToStr(AThen),' and ',DateToStr(ANow));
 Write(' are within ',AWeeks,' weeks: ');
 Writeln(WithinPastWeeks(ANow,AThen,AWeeks));
end;
Var
  D1,D2 : TDateTime;
Begin
  D1:=Today;
  D2:=Today-7;
  Test(D1,D2,1);
  D2:=Today-8;
  Test(D1,D2,1);
  D2:=Today-14;
  Test(D1,D2,1);
  D2:=Today-35;
  Test(D1,D2,5);
  D2:=Today-36;
  Test(D1,D2,5);
  D2:=Today-17;
  Test(D1,D2,1);
  Test(D1,D2,2);
  Test(D1,D2,3);
End.