![]() ![]() ![]() For more information about multilanguage capabilities with date formulas, see Developing Multilanguage-Enabled Applications. The angle brackets () specify that the expression is not translated, regardless of the application language. The DateExpression is composed of the following: This should be interpreted as the following: current quarter + 1 month - 10 days. This code example shows how to use the production rules that were previously described. This makes it possible to develop date formulas that are not dependent on the currently selected language.įor more information about how to calculate the duration between two DateTimes, see Duration Data Type. If a date formula is entered with delimiters surrounding it, then the date formula is stored in a generic, nonlanguage-dependent format. When the formula must be displayed, the actual string that is displayed is converted to the currently selected language.įor example, if a user who has language set to ENG (English) enters the date formula "1W+1D" for one week and one day, then a user who has the language set to FRA (French) sees "1S+1J," and a user who has the language set to ESP (Spanish) sees "1S+1D". The formula is stored in a generic format in a field or variable. The user can enter formulas in the currently selected language. The benefit of using a DateFormula field or variable is that the date formula becomes language independent. RemarksĭateExpression can be a field or variable of type Text or Code, and it can be a field or variable of type DATEFORMULA. The date that is computed from the reference date and the date expression. If you omit this optional value, the current system date is used. Use this optional parameter to define a reference date. ![]() This means that Monday is weekday 1 and Sunday is weekday 7.Ī run-time error occurs if the syntax of DateExpression is incorrect. ![]() The internal calendar of Dynamics NAV starts on Monday and ends on Sunday. The following are some typical examples of terms: Each subexpression consists of an optional sign and a term. These production rules show that date expressions consist of zero, one, two, or three subexpressions. = D | WD | W | M | Q | Y (D=day, WD=weekday, W=week, M=month, Q=quarter, Y=year) The following rules describe the valid syntax of date expressions: The string is interpreted from left to right with one subexpression at a time. If nevertheless you can't figure out how to solve a particular problem, please let me know! (See e-mail address at the bottom of this document.Calculates a new date that is based on a date expression and a reference date. Some (mainly protestant) countries continued to use the Julian calendar (used until then) until as late as the beginning of the 20th century.įinally, note that this package is not intended to do everything you could ever imagine automagically for you it is rather intended to serve as a toolbox (in the best of UNIX spirit and traditions) which should, however, always get you where you want to go. even though the Gregorian calendar was only adopted in 1582 by most (not all) European countries, in obedience to the corresponding decree of catholic pope Gregor I in that year. Note that this package EXTRAPOLATES the Gregorian calendar BACK until the year 1 A.D. The module of course handles year numbers of 2000 and above correctly ("Year 2000" or "Y2K" compliance) - actually all year numbers from 1 to the largest positive integer representable on your system (which is at least 32767) can be dealt with. This module is a direct translation of Steffen Beyer's excellent Date::Calc module to Perl. (See also for a scan of part of the "DIN 1355" document (in German)). Gregorian calendar date calculations Version: 6.1ĭate::Pcalc is a Perl module for all kinds of date calculations based on the Gregorian calendar (the one used in all western countries today), thereby complying with all relevant norms and standards: ISO/R 2015-1971, DIN 1355 and, to some extent, ISO 8601 (where applicable). ![]()
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