On 03.04.2007 04:56, Mike wrote: > How could I know that current iteration is the last in the series? > For example: > > [1, 2, 3, 4, 5, 3, 4].each do |element| > print element.to_s > print ',' if !LAST > end > > P.S. This is just an example. I don't want to use "join". My program > logic is much complicated than this example. Then *what* is your logic? What are you trying to achieve? Kind regards robert