Re: PersianComputing Digest, Vol 21, Issue 6 (fwd)
On Fri, 25 Feb 2005, Skip Tavakkolian wrote: I'm not sure how the date data type can be representation agnostic. What ever the OS provides (via a system call) is in reference to a starting point in some calendar. On UNIX systems, this is traditionally the number of seconds since January 1, 1970, i.e. Gregorian. GetSystemTime on Win32 returns a structure, which represents the Gregorian date. The UNIX epoch can easily defined as the number of seconds since 11 Dey 1348. The important data is a date in the sense of a point in the axis of time. How you write it out, depends on one speific representation though. --behdad http://behdad.org/ ___ PersianComputing mailing list PersianComputing@lists.sharif.edu http://lists.sharif.edu/mailman/listinfo/persiancomputing
Re: The New Alef
Quoting Behdad Esfahbod [EMAIL PROTECTED]: http://bamdad.org/~roozbeh/alef.jpg Smart! That can be useful in hex numbers written in Arabic script too. Indeed they want it to look like one letter, and don't want the Alef to be read as 1. Smart indeed! Put this on the list of desired characters for fonts. Suddenly I'm realizing how ugly my multiple choice tests are looking with the Alef spelled out letter-by-letter when it could be this attractive, compact design as one glyph, perhaps no larger than Beh, Jim, etc. -Connie ___ PersianComputing mailing list PersianComputing@lists.sharif.edu http://lists.sharif.edu/mailman/listinfo/persiancomputing
Re: PersianComputing Digest, Vol 21, Issue 13
Well, that's why I'm saying your implementation is not what MySQL people expect. The date data type is representation-agnostic itself, and AddDate, DateDiff, etc work with the date data type (at least in MySQL). What you need is functions to covert from internal date representation to Iranian calendar string, and vice versa. You don't need (and should not) implement all date functions again. Well, at first I wanted to implement a multicalender system for mysql through a variable per column that can be set while creating tables, something like : Create table t0 (dt Date calender jalali) ; but as mysql didn't accept , I worked on some functions.Now, I save iranian Date in Date data type of mysql so why can't i define JDateAdd and JDateDiff for iranian Date ?? Of course you are right , I shouldn't implement all Date functions again but don't we need DateDiff function? Maybe I misunderestood what you are saying , sorry. Regards, Mohsen A. Momeni ___ PersianComputing mailing list PersianComputing@lists.sharif.edu http://lists.sharif.edu/mailman/listinfo/persiancomputing
