1. Pair programming Cesar D. Guerrero Department of Computer Science and Engineering guerrerc@cse.usf.edu May 12, 2008

2. Pair Programming 2 Driver: types at the computer or records a design Navigator: watches the work of the driver and attentively identifies problems, asks clarifying questions, and makes suggestions. What is pair programming? Two programmers work in the same machine playing two possible roles:

3. Pair Programming 3 Several universities have successfully implemented pair programming in most of their CS programming classes Pair Learning Several journals and conferences on education have presented the benefits of this method. Also books have been published like Pair Programming Illuminated by Williams, L. and Kessler, R.

4. Pair Programming 4 Sign-up sheet You will choose your own programming partner or let the TA pick partner for you in the lab. Either way, you and your partner need to sign your names with the TA for the lab that you two will be working on.

5. Pair Programming 5 Pair rotation Each student will play both roles (driver and navigator) during each lab assignment. Switching roles means that the keyboard and mouse slide from one programmer to the other. Do not get up to swap chairs. In your lab submission, you will indicate what roles (driver/navigator) you and your partner played for each exercise. DriverNavigator

6. Pair Programming 6 Evaluation For labs finished by pair programming, students will receive the same grade for the assignment. You will receive during the semester at least two surveys evaluating your experience.

7. Pair Programming 7 1.Take breaks: stand up and stretch every 40 minutes. 2.Practice humility: excess ego can prevent the programmer from considering other’s ideas 3.Be confident / be receptive: a fear of appearing stupid also decreases the number of bold proposals and ideas suggested. 4.Communicate: no more than a minute should pass without some sort of communication between the pair. 5.Listen: listen to what your partner has to say before responding. 6.Be a team player: when you play the navigator role, keep in mind that your partner’s work is your work. You will take over as driver in any moment. 7.Hone the balance between compromise and standing firm: if your partner really wants a do-while loop but you think it would be better as a for loop, think about whether it really makes a difference in this case before being insistent or argumentative. Seven Habits of Effective Pair Programmers

8. Pair Programming 8 Questions?