Not anymore. I used to do it all the time in the pre-IDE days, back when dot-matrix with continuous feed was the norm. You could spread those printouts out and flip through them quite easily. Modern sheet-fed laser/inkjet printers are a huge step backwards. Stapling them together doesn't flow as well, and not stapling results in loose sheets that get mixed up. Modern IDEs with automatic highlighting and method navigators also eliminate whole classes of errors that were caught by examining printouts.