WithinPastWeeks¶

Check whether two TDateTimes are only a number of weeks apart.

Declaration¶

Source position: dateutil.inc line 268

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

Arguments¶

Name	Description
ANow	First moment in time.
AThen	Second moment in time.
AWeeks	Number of weeks to check.

Function result¶

True if ANow and Athen are only AWeeks apart, false otherwise.

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