Ruby on Rails

Colin Law wrote in post #970510:
> On 24 December 2010 14:47, Marnen Laibow-Koser <lists@ruby-forum.com>
> wrote:
>>> Talking slight bollocks. I meant that you can't store with infinite
>>> precision, ie you'll always be liable for some error.
>>
>> Of course. You know a better way? Should we just store everything as
>> Rational?
>
> For things that _are_ decimal numbers (such as money) use Fixed or
> BigDecimal and for things that are not decimal then use Float and
> determine the errors if it is important.

That's basically what I've been saying, except for "decimal" substitute
"rational". However, there's not always an a priori way to determine if
a given field will need to store irrational numbers.
>
> Colin

Best,
-- 
Marnen Laibow-Koser
http://www.marnen.org
marnen@marnen.org

Sent from my iPhone

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