On Dec 22, 10:34 pm, TomRossi7 <[email protected]> wrote: > Any idea why this calculates the integer the way it does? > > irb> ("291.15".to_f * 100.0).to_i > => 29114
As Marnen's already pointed out, the issue is that the result is a *tiny* bit smaller than 29115, so to_i truncates off the entire fractional part and gives the wrong answer. In general, if you want to convert a decimal to an integer the way most people would on paper, use .round.to_i, which will correctly round the float to the nearest integer. On the currency issue, it's typically a good idea to avoid floating- point throughout the process if you're trying to get a reliable fixed- point result. Decimal columns are definitely a good idea for this sort of thing. --Matt Jones -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
