How can I make this show only if the percentage changed? [closed]

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I'm stuck here:

puts "#{percent_finished.round}% uploading complete" ? if/unless ...

---

If percent_finished is part of an ActiveRecord model, you can actually just make a call to percent_finished_changed?.

For example:

puts "#{percent_finished.round}% uploading complete" if percent_finished_changed?

Here's some documentation:

http://ar.rubyonrails.org/classes/ActiveRecord/Dirty.html

---

Is this a command line tool?

last_percent = nil
upload_loop do
    # ...
    percent_rounded = percent_finished.round
    puts "#{percent_rounded}% uploading complete" if percent_rounded != last_percent
    last_percent = percent_rounded
end