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How AI is Changing the Way We Write Code (With Real Examples)

Introduction

AI has changed how we work with code. Tasks that used to take a lot of time can now be done faster and with less effort. Developers are now using AI tools to write, fix, understand, and improve their code.

Let’s go through some clear examples of how AI is making a difference, especially for C# developers like us.

1. AI writes code based on your instructions

You just need to write a comment or describe what you want. The AI figures it out and gives you working code.

Example: You write

// Get top 5 students with highest marks

AI suggests

var topStudents = students.OrderByDescending(s => s.Marks).Take(5).ToList();

You don’t need to search online or write from scratch.

2. AI helps fix errors

If your code has an error and you’re not sure why, AI can help you find and fix it. Just share the code and ask what’s wrong.

Example

string name = null;
int length = name.Length; // Error here

AI tells you that you’re trying to get the length of a null string. It suggests this.

if (name != null)
{
    int length = name.Length;
}

This saves time and confusion.

3. AI explains code

When you see a piece of code and don’t understand what it’s doing, you can ask AI to explain it.

Example

var passed = students
    .Where(s => s.Marks >= 40)
    .Select(s => s.Name)
    .ToList();

AI explains that this code selects the names of students who scored 40 or more and stores them in a list.

It’s like having someone next to you who knows what every line does.

4. AI helps clean up code

If your code looks messy or hard to read, AI can clean it up and make it more readable.

Example: Original code

if (user.Role == "Admin" && user.IsActive && user.LoginCount > 5)
{
    GrantAccess();
}

AI simplifies it.

if (IsValidAdmin(user))
{
    GrantAccess();
}
bool IsValidAdmin(User user)
{
    return user.Role == "Admin" &&
           user.IsActive &&
           user.LoginCount > 5;
}

The code becomes easier to read and maintain.

5. AI writes test cases

If you write a method and need to test it, AI can create test cases for you. This helps you save time and avoid mistakes.

Example: Your method

public int Add(int a, int b)
{
    return a + b;
}

AI writes

[TestMethod]
public void Add_AddsTwoNumbers_ReturnsCorrectResult()
{
    var result = Add(2, 3);

    Assert.AreEqual(5, result);
}

You can focus on logic while AI handles the testing.

6. AI builds full features from prompts

You can describe what you want, and AI gives you most of the code needed to build it.

Example: You say,

//Create a method to save student data to a SQL Server database.

AI gives you.

public void SaveStudent(Student student)
{
    using (SqlConnection conn = new SqlConnection(connectionString))
    {
        string query = "INSERT INTO Students (Name, Age) VALUES (@Name, @Age)";
        
        using (SqlCommand cmd = new SqlCommand(query, conn))
        {
            cmd.Parameters.AddWithValue("@Name", student.Name);
            cmd.Parameters.AddWithValue("@Age", student.Age);
            
            conn.Open();
            cmd.ExecuteNonQuery();
        }
    }
}

You can directly use this and make changes based on your project.

7. AI writes documentation

If you don’t enjoy writing comments or XML docs, AI can generate them for you.

Example: You write

public int Add(int a, int b)
{
    return a + b;
}

AI adds

/// <summary>
/// Adds two numbers and returns the result.
/// </summary>
/// <param name="a">First number.</param>
/// <param name="b">Second number.</param>
/// <returns>Sum of the two numbers.</returns>

This makes your code easier to understand for others.

8. AI spots risky code

AI can tell you when your code is not safe or may break something. It gives suggestions to fix it.

Example: You write

string password = txtPassword.Text;

AI warns you not to store passwords like this. It suggests hashing.

string hashedPassword = HashPassword(txtPassword.Text);

This makes your application more secure.

Conclusion

AI is not just helping with code. It’s changing how we build software. You can write faster, avoid bugs, understand code better, and even secure your applications more easily. You still need to review code generated by AI and test your code and think through your logic, but with AI, you’re no longer doing everything alone.

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