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

TryEncodeDateWeek

Encode a year, week and day of week triplet to a TDateTime value

Declaration

Source position: dateutil.inc line 315

function TryEncodeDateWeek(

  const AYear: Word;

  const AWeekOfYear: Word;

  out AValue: TDateTime;

  const ADayOfWeek: Word

):Boolean;

function TryEncodeDateWeek(

  const AYear: Word;

  const AWeekOfYear: Word;

  out AValue: TDateTime

):Boolean;

Arguments

AYear

  

Year

AWeekOfYear

  

Week in the year

AValue

  

Encoded TDateTime value

ADayOfWeek

  

Day of the week (default 1).

Function result

True if the encoding was succeful, False otherwise.

Arguments

AYear

  

Year

AWeekOfYear

  

Week in the year

AValue

  

Encoded TDateTime value

Description

TryEncodeDateWeek encodes the values AYear, AWeekOfYear and ADayOfWeek to a date value and returns this value in AValue.

If the encoding was succcesful, True is returned. False is returned if any of the arguments is not valid.

See also

EncodeDateMonthWeek

  

Encodes a year, month, week of month and day of week to a DateTime value

EncodeDateWeek

  

Encode a TDateTime value from a year, week and day of week triplet

EncodeDateTime

  

Encodes a DateTime value from all its parts

EncodeDateDay

  

Encodes a year and day of year to a DateTime value

TryEncodeDateTime

  

Encode a Year, Month, Day, Hour, minute, seconds, milliseconds tuplet to a TDateTime value

TryEncodeDateMonthWeek

  

Encode a year, month, week of month and day of week to a TDateTime value

TryEncodeDateDay

  

Encode a year and day of year to a TDateTime value

Example

Program Example82;

{ This program demonstrates the TryEncodeDateWeek function }

Uses SysUtils,DateUtils;

Var
  Y,W,Dow : Word;
  TS : TDateTime;

Begin
  DecodeDateWeek(Now,Y,W,Dow);
  If TryEncodeDateWeek(Y,W,TS,Dow) then
    Writeln('Today is : ',DateToStr(TS))
  else
    Writeln('Invalid date/week indication');
End.

Documentation generated on: Nov 16 2015