sleep until condition is true in ruby

Question

Is there any better way in Ruby to sleep until some condition is true ?

loop do 
  sleep(1)
  if ready_to_go
    break
  end
end

Answer 1

I like this form since it is simple and only uses sleep if needed after it tests for the done condition:

begin
  ready_to_go = do_some_action
end until ready_to_go or not sleep 1