pair programming

Hello Rinki

I have done 2 year pair programming experience cross country/teams, i will try to explain simply.

Consider we have to write a functionality of exporting pdf. Two devs getting into Team/Skype call and work that out in a regular Tag up session setup daily. Criteria of Pair Programming is one should start off with code and other should review . Let Dev 1 complete at some point and work that out (say for 20-30 min or so )and then Dev 2 can suggest/review/feedback/comments (Don't interrupt after every line of code saying this name should be better,use this syntax rather than that etc) . Then later next 30 min devs switch roles and follow same.

Benefits are we might get better ideas to approach/solve problem, knowledge improves, build trust bond ( setting professional boundaries)

Hope this helps

What is Pair Programming?

Pair programming is a software development technique where two developers work together at one computer to write code. One person types (called the Driver) while the other reviews and guides (called the Navigator).

It’s a core practice in Agile and Extreme Programming (XP) methodologies because it improves code quality, knowledge sharing, and team collaboration.

Roles in Pair Programming

1. Driver:

   • Writes the code.

   • Focuses on the syntax, logic, and immediate task.

2. Navigator:

   • Reviews the code as it’s written.

   • Thinks about design, possible bugs, and the big picture.

   • Suggests improvements and next steps.

Example:

Let’s say you’re building a function in C# to calculate factorial:

Driver writes:

int Factorial(int n)
{
    if (n <= 1)
        return 1;
    return n * Factorial(n - 1);
}

Navigator observes and suggests: Looks good! But what if n is negative? Let’s handle that case.

Driver updates:

int Factorial(int n)
{
    if (n < 0)
        throw new ArgumentException("Negative numbers not allowed.");
    if (n <= 1)
        return 1;
    return n * Factorial(n - 1);
}

The result: fewer bugs, better validation, and shared understanding.

Benefits of Pair Programming

• Improves code quality

• Enhances knowledge sharing

• Boosts team productivity

• Reduces defects

• Strengthens communication and collaboration

Challenges

• Can be time-consuming

• Slightly higher short-term cost (two devs per task)

• Requires good coordination and communication

In Short: Pair programming = Two minds, one keyboard.
It helps teams write better code faster through real-time collaboration.

Pair programming is a software development technique where two developers work together at the same workstation to write code. One developer takes the role of the "Driver", who writes the code, while the other is the "Navigator", who reviews each line of code as it is written and thinks strategically about the direction of the work. The roles are usually switched at regular intervals to keep both developers engaged and to share knowledge effectively.

Benefits:

• Helps reduce bugs through real-time review
• Encourages knowledge sharing between team members
• Improves team collaboration and communication

Go through below articles/blog

https://www.c-sharpcorner.com/article/have-you-tried-pair-programming

https://www.c-sharpcorner.com/blogs/two-heads-one-code-a-guide-to-effective-pair-programming