Even in just US Dollars, Floats are bad for money. E.g., if you get involved with sales tax, you're better off calculating in Pennies and sprinf'ing the $ . in, you don't want .0000001 issues.
Exceptions to this rule require very careful analysis. - Bill aka n1vux NOT SPEAKING FOR $DAYJOB -----Original Message----- From: Boston-pm [mailto:boston-pm-bounces+william.ricker=fmr....@mail.pm.org] On Behalf Of Alex Brelsfoard Sent: Thursday, January 10, 2013 12:32 PM To: Shlomi Fish Cc: L-boston-pm Subject: Re: [Boston.pm] Template toolkit and floats Thanks Shlomi, My boss told me not to worry about different currencies yet. He's pushing to get the site up asap with the bare necessities. I actually have some similar custom code that I'll be using later when I get more time to implement it (not my first time dealing with international currencies). But thanks very much for thinking of this and providing the link. That's a nice clean collection. --Alex On Thu, Jan 10, 2013 at 5:19 PM, Shlomi Fish <shlo...@shlomifish.org> wrote: > Hi Alex, > > On Thu, 10 Jan 2013 16:17:06 +0000 > Alex Brelsfoard <alex.brelsfo...@gmail.com> wrote: > > > Nevermind... Sorry... Turned out to be a JS problem actually.... parseInt > > vs parseFloat.... > > > > Ugh. > > > > > > On Thu, Jan 10, 2013 at 4:06 PM, Alex Brelsfoard > > <alex.brelsfo...@gmail.com>wrote: > > > > > Hi All, > > > > > > I am working on a custom shopping basket, and using Template to > multiple > > > the quantity of each item by its base price, and then also summing it. > > > But I'm losing the floating points. It's coming out as flat INTs. > > > > > > Any idea of how to fix this? > > > > > > Thanks in advance. > > > > > > --Alex > > > > > > > I'm glad you got your problem sorted out, but note that you should note use > the built-in floating-point arithmetics for currency. See: > > * https://metacpan.org/release/Math-Currency > > * http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html - "What > Every > Computer Scientist Should Know About Floating-Point Arithmetic". > > Regards, > > Shlomi Fish > > -- > ----------------------------------------------------------------- > Shlomi Fish http://www.shlomifish.org/ > "Humanity" - Parody of Modern Life - http://shlom.in/humanity > > <Botje> Khisanth =~ s/must sleep/must give Botje all my money/ . > - Freenode's #perl > > Please reply to list if it's a mailing list post - http://shlom.in/reply . > _______________________________________________ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm _______________________________________________ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
