Re: RE: Re: Bug in FromDate
- To: mathgroup at smc.vnet.net
- Subject: [mg49171] Re: [mg49143] RE: [mg49130] Re: [mg48903] Bug in FromDate
- From: DrBob <drbob at bigfoot.com>
- Date: Tue, 6 Jul 2004 03:33:37 -0400 (EDT)
- References: <200407050854.EAA14739@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Well said, Hartmut! Bobby On Mon, 5 Jul 2004 04:54:22 -0400 (EDT), Wolf, Hartmut <Hartmut.Wolf at t-systems.com> wrote: > >> -----Original Message----- >> From: Sébastien de Menten [mailto:sdementen at hotmail.com] To: mathgroup at smc.vnet.net >> Sent: Friday, July 02, 2004 8:02 AM >> To: mathgroup at smc.vnet.net >> Subject: [mg49171] [mg49143] [mg49130] Re: [mg48903] Bug in FromDate >> >> >>>>> I am using FromDate with arguments outside the usual scope but don't >>>>> get any sensible result. >>> >>> Why should you? >>> >> >> Because sometimes it may be quite handy to be able to say: the date 20 >> months after the day d with just ToDate[FromDate[d + {0,20,0,0,0,0}]]. >> >> In fact, this is the behaviour of the mktime function of the >> standard C >> library (allow any range in the different time fields year, >> month,etc and >> normalise them in mktime). >> >> > [...] > > Handy, perhaps, but you should know what you're doing then! So what is > > {2004,3,30,17,15,58} - 1 Month ? > {2004,3,30,17,15,58} + 1 Month ? > {2004,3,30,17,15,58} - 1 Month + 1 Month ? > {2004,3,30,17,15,58} - 13 Month + 13 Month ? > > The desired results seem to be dependend on culture, e.g. of banking account bankers, payroll payers, insurance police insurers -- and all that would be completely OK! (They have their answers.) But what a mess, if they were dependend on C-libraries, Perl-functions, etc...? Mathematica hopefully wouldn'd line up there. > > After all, it's easy to write an application function, but specify it first! > > -- > Hartmut Wolf > > -- DrBob at bigfoot.com www.eclecticdreams.net
- References:
- RE: Re: Bug in FromDate
- From: "Wolf, Hartmut" <Hartmut.Wolf@t-systems.com>
- RE: Re: Bug in FromDate