Re: Accounting with Lua

["troels knak-nielsen" <troelskn@...>]

And in addition to David's advice, do remember that money (and time)
are complex data-types. Trying to treat them as numbers is a bad idea.

Take a look at: http://timeandmoney.sourceforge.net/

--
troels

On Mon, Sep 8, 2008 at 11:15 AM, David Kastrup <dak@gnu.org> wrote:
> Asko Kauppi <askok@dnainternet.net> writes:
>
>> Some weeks ago, I had a hard disk problem that basically wiped out my
>> accounting software (last Windows application I was using). About
>> time.
>>
>> I considered the options (€ 300 upgrade for the same software) and
>> decided to just do it with Lua.
>>
>> This is only for my own usage (as Linux was for Linus...) but I'd like
>> to hear if anyone else is using Lua for their SOHO business or
>> personal finances.
>>
>> I'm using Lua as the data description language for transactions (no
>> database), and some hundreds of lines of "main code" create reports
>> for monthly and yearly taxation.  Printing bills using LuaCairo (into
>> PDF) will be the next stage, and there I shall stop.
>
> Well, there is the obvious advice: do the accounting in cents, not in
> dollars.  Lua can represent multiples of 1 exactly, but not multiples of
> 0.01.  So if you are doing your calculations in dollars, at some point
> of time the cents will not add up properly.
>
> --
> David Kastrup
>
>