Software Development
Pair Programming
Definition
Pair programming is an agile software development technique in which two programmers work together at one workstation. One, the "driver," writes code while the other, the "navigator," reviews each line of code as it is typed in. The two programmers switch roles frequently.
Why It Matters
Pair programming can lead to higher quality code with fewer defects, as there is a constant code review process happening. It is also an excellent way to share knowledge and onboard new team members.
Contextual Example
Two developers are working on a complex algorithm. One is typing the code (the driver), while the other is thinking about the overall strategy, potential edge cases, and looking for typos (the navigator). They might swap roles every 30 minutes.
Common Misunderstandings
- Pair programming is not just one person watching another person code; it is an active collaboration.
- While it may seem less productive (two people on one task), many studies show it reduces bugs and long-term maintenance costs, making it more efficient overall.